For 40 years, KISS has been enthralling fans with its hard-rock sound, over-the-top look and pyrotechnic shows. Although Gene Simmons has claimed &amp;lt;a href=&amp;quot;http://www.esquire.com/blogs/culture/gene-simmons-future-of-rock&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;in Esquire magazine&amp;lt;/a&amp;gt; that &amp;quot;rock is finally dead,&amp;quot; KISS is one of the genre&amp;#39;s most enduring bands. Here&amp;#39;s a look back at the group over the years. From left, Paul Stanley, Peter Criss, Gene Simmons and Ace Frehley pose for KISS&amp;#39; first album in 1974.