<p>Sitcoms are the backbone of television, and just like your actual backbone, they degrade over time and often end in sh!t. But occasionally they produce stars, or sorta stars, or at least stardust particles, that find their way to the big screen. Which sitcom casts have blasted past their dominion to hit some pinnacle in cinema or beyond? Time to find out what the Pals are talkin bout, Willis.</p>