With a combined 51 years of comedy experience among them, the men of Stella have a sense of humor so finely tuned it whirs like a machine that's only 17 years old. Former players on MTV's The State and the creative force behind the 2001 summer-camp movie parody Wet Hot American Summer, Michael Ian Black, Michael Showalter, and David Wain have been performing as Stella since 1997. To make things more confusing, they're now the stars of their own Comedy Central series, Stella (which premiered June 28), a show with so much verbal volleying it's the satirical equivalent of a doubles tennis match (if one player were missing). Let the games begin! The three of you have been working together for a long time -- David Wain: Yes, we've been working together since 10:30 this morning. I meant since 1988, when you were at NYU.