Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fascinating, fun, hilarious, and highly recommended

An excellent compendium of oddball factoids, sharply designed and smartly written, c/o the fine folks at Mental_floss. I don't know how long it must have taken to compile all this stuff, but you can easily spend a weekend or more tearing through it. Good stuff -- I couldn't have enjoyed it more had I co-written it myself.