Incredible.  Perfect Fun.
596605
This is not like any mere DLC pack.  This is an expansion that adds incredible depth to the game.

New maps, new aliens (very scary), new customization options, a new human terrorist group to deal with, a new alien resource that complicates mission objectives, genetic upgrades, cybernetic upgrades, and so on.  Both the new aliens and Meld resource makes strategic play way more interesting.  Will you take risks to get the Meld?  Can you risk separating soldiers when there are stealth mode stranglers out there?

Soldiers can now speak Italian, Spanish, French, German, Russian, or English while on missions.  Very cool.  Not sure why there are no Asian languages.  But there are also new soldier responses and reactions that are pretty cool and even funny.

Soldiers can earn medals.  You customize in medal titles and determine the effects granted to recipients.

Enemy Within is truly a sequel in many ways.  New story twists and tons of options make gameplay totally different each time you play.  Now you truly must weigh the importance of genetic advantages versus armor upgrades, let's say.  Will you make mechs and put off researching weaponry?  Should your soldiers be made superhuman even though you risk them getting killed and losing all that improvement?  Should you spread out medals or award them (and their perks) to only a few soldiers?

I've also noticed that gameplay has improved in a few ways.  It is easier to throw grenades just about anywhere.  The aiming of projectiles is much smoother and easy to control.  Your movement options are very clearly marked out when you select a soldier, including climbing pathways.  You can turn off the annoying and game-halting speeches of your head scientist and engineer.

There are a ton of details to cover here, so I will just say BUY IT NOW.  It is well worth the price.  If you love XCOM or science fiction in general, this game is an incredible experience.  I hope they make a new expansion every year, because Firaxis knows how to make an excellent strategy game.  Just AWESOME.
4524136
I always thought games seemed to be a kid or teenage thing, but truly this game can be fun for a group of adults or a family with teenagers/young adults.  Even the most serious and reserved of my friends were laughing hysterically throughout the game.  None of us wanted the game to end because we were having such a blast.  I am so excited to have something entertaining and engaging to do when I have my next dinner party with friends.  ALSO for once all of my friends and I were off of our CELL PHONES...everyone was engaged in the game completely.  If you are looking for a COOL and FUN game...this is perfect. I think it would make an excellent gift to bring over to someones house when you go for a party.
3834700
Absolutely outstanding.  Best present we ever gave.  One-year-old granddaughter went absolutely bananas, splashing, playing and
having a great time.  Very well designed, very well made.  Safe, comfortable, easy to assemble.  Best set of assembly instructions I've ever seen.
A total of eleven screws, 9 of which are the same size.  Each of the other two are different lengths and readily discerned.  A power screwdriver and the least bit of handiness, and you'll have this put together in about 15 minutes, half an hour tops.  And the assembly instruction manual comes in nine languages(!)
Very safe - no way the kid is going to get in trouble.  If it somehow tips over, the water just falls out - this is an outdoor toy, btw.  Whoever plays with it is going to splash a lot of water.  It does NOT hook up to a hose.  Alternate buckets of warm and tap temperature water.  And get ready to get down on your knees to play with the kid.
2636593
This game, whether you love it or hate it, will bring entertainment so long as it can stand to be played by the players in the game.

If you can handle a little bit of random play(Okay, maybe a lot of random play... okay, ENTIRELY random), and love something fast paced, this is the game for you. Rounds literally last from 30s to 3m at most it seems like.

It's so easy, and everyone can play. Just read the cards, and follow the directions. If you're a good sport, you're guaranteed some great laughs, cries of frustration, and probably enough quotable moments for days, weeks, or months to come(this last part is entirely dependent upon you and/or your group of friends having great personalities).

WDPTTAL is an excellent game for new friends or acquaintances, and even better for a close group of people. You can play with as few as 2(or one, as the box suggests... but that's a bit weird, eh?) or as many as 20+ honestly. You will not regret this game, unless you have really terrible luck and a bad temper. But, I'm assuming if you can even HOST a party with real people and friends, that means you're not either of those, or at least not some horrible combination of them.
2439605
The most fun I've had in a long time.  Casual game with something for everyone, you'll be trying to complete the main mission but easily side tracked when all of the sudden you are being insulted by a brave but stupid Orc.  They go as far as other orcs rooting for the captain that insulted you.  Well thought out and attentive to detail made this a great buy.
765223
I can't believe how fun this game is. It is awesome. Buy it if you haven't. It comes brand new and easy to play.
402954
Soooooo much fun. The whole family played it. I didn't think I would like it soooo much.  Looking for more games like this.
3957922
It is so fun.  I don't use often, but it certainly is great.
2008349
This is wonderful. The player is the apprentice and learns motions while having fun that makes you look like a musical conductor. The motions really build up ones arm muscles; and the music and graphics are magical. It's fun and exciting as you don't know what is going to happen next. Due to having to identify which motions to do within the music timing, and doing them in time- it helps with cognition and other skills. Excellent and fun. It initially may look complicated or quick, but the game is more than doable as it shows hints if needed and is quite fun in the movements. Complete the task set and all other movements are additional points. This becomes more and more possible as one gets used to the movements. Even the most no move person we played with who thought when initially watching others play that the game was confusing,  agreed to try it - and loved it so much that he kept wanting to play. It's for every ability and every age. Have fun.
2745042
This is fantastic fun. Adicting. When we got it I was crippled after playing for six hours straight, but as soon as I straightened up, I went back for more. Eventually my kids began to crush me, but it is still a lot of fun.
3401814
Great Toy!!  I have to warn you .. you are going to want to have the camcorder ready to roll!  It took just minutes to hook up.  HOURS to break ourselves away from it.  We all had such a blast.  If you aren't playing you can enjoy watching the others play.  Our family are ages 18 months .. my grandson (he loves the balloons) .. my 5 year old (he loves them all) .. my older sons and daughter in law are between 21 and 23 and myself, 41 years old and I can't tell you who had more fun.  We have already ordered more games and systems.  I hope they keep making games for this one.
2489261
This game is absolutely amazing. One of the most fun games I've ever played. To maximize the fun, fire up Pandora and throw on Dark Knight radio. I really elevates the experience. But yeah, buy this.
1451275
This is so much fun and there are so many possibilities.  Both my granddaughters found it fun - 7 and 13 years old.  I will have to buy some more kinds for them to try.  It is seriously fun and addictive.
189356
The multiplayer demo of this game, which just has 1 map, 2 sides, and not all of the vehicles from each of those sides, has already proved to be extremely addicting and fun to play.
There's just so much you can do and so many possibilities, since you can jump into and out of any vehicle instantly and play as one of 5 infantry classes.  Even your infantry class selection is flexible, because you can quickly drop your current kit and pick up a dead infantry's kit from the ground, effectively changing your infantry class on the fly.
Also, the weapons and vehicles are all very well balanced.  For example:  the rocket that the bazooka/anti-tank infantry class fires doesn't do much damage to infantry, unless if it's a direct hit.  This makes players have to choose the best kit for what they want to do, and ,unlike Quake and other action games, rocket launchers won't dominate all aspects of combat.  They are, however, good at what they're meant to do:  destroy tanks, with their shaped-charge explosives.  Just the way everything fits together is so beautiful, and there's always a counter for every weapon and vehicle.
The gameplay is so open ended that you can get pretty creative.  I've done things throwing all my explosive packs into a japanese jeep (as an engineer), getting my detonator ready, driving to an enemy base or battle, jumping out of my jeep and letting it roll into the middle of enemies, and then blowing it up to get a few kills (especially when they get inside to drive it while my explosives are still in it, hehe) and other crazy things.
The demo has already become the 2nd most played game on GameSpy, beating all others except Half-Life (which has a ton of mods since it's been out so long), so there will probably be a large playerbase, making finding servers easy.
The system requirements may be a little steeper than some other games, but it is well worth it, and the game runs beautifully.  (I can run the demo, all graphics options maxed at 1024x768 32bit, on my athlon 1.4 ghz 512mb ram GeForce4 ti4200 128mb at a smooth and high framerate)  The models are very well detailed, you can see the eyes on the infantry moving and blinking, and their mouthes opening and closing.  The level of detail system allows this by scaling down the polygon counts and stuff as vehicles and infantry get further away from you, and increasing details as things get closer to you, so there's no wasted visual performance.
This game is like many games in one, and has something for everyone that likes action or war games.  My favorite genres are action games and flight sims, and the way this game mixes it all together, in an accessible, balanced, and action packed sort of way, is perfect.
4105488
Unbelievably fun. Characters have physical and mental point values which directly affect, and are affected by, their exploration of the house. The game arrived Monday, and we've spent over 8 hrs playing it already!

Trust me, if you enjoy story-based games with an original concept, and aren't against a little dark adventure, then this is the game for you.
4532011
This game is endlessly amusing and super easy for almost everyone to play. All the details are super delightful, from aquiring 'young 'ens' to getting a 'rig' and getting married (and divorced and remarried) the options are endless, you'll never have the same journey twice. The game even offers suggestions on different ways to play and an expansion pack which offers even more options. By far the best game I've purchased, I reccomend it to anyone who wants a laughter filled, light hearted evening.
2883478
I really didn't expect this thing to be as fun as it is.  This toy is really well designed.  The arena is a great reproduction of the real thing.  Sure it's plastic and cardboard - but it's a nice solid quality.  The bulletproof windows are a nice and useful touch (pieces do go flying).
The robots are quick, agile, and challenging to drive (due to their speed).  They are designed to have a few "breakaway pieces".  Witch Doctor has 2 pieces that snap off its plow as well as the top cover.  Tombstone's top cover and two rear panels come off as battle damage.
They each feature a spinning attack weapon - which are not very strong but fun to control.  The remote allows you to turn the spinning weapons on and off via a button on the controller.  The robots are controlled with similar controls as a RC car.  front/back direction and right/left.  Nothing pressed = no motion.

I bought this for my son's 7th birthday.  We watched the TV show and he loves this toy.  We spend time battling it out.  We switch robots to ensure a balanced play.  We came up with the rule that once the top cover flies off, the robot is KO'ed.  Tombstone's top cover tends to be a little easier to knock out.  Overall, this is a great rendition of the functionality of the stars of the show and the arena.  Great playability.  This is a really enjoyable fun toy.  Great design.