"How does a big movie star like Matt Damon end up doing a sitcom ("Will & Grace"), a voice-over at the end of a movie he's not in ("The Majestic") and a tiny cameo as a punk rocker with a shaved head and multiple tattoos in a low-budget comedy ("Eurotrip")? ...He said he did the episode of "Will & Grace," ... because one of the show's stars - Sean Hayes - is a friend. "Sean called me up one day and asked me if I wanted to do it, and it sounded like fun," Damon said. As for "The Majestic," Damon said he turned down the role that Jim Carrey eventually played, and then felt bad about the decision because the director, Frank Darabont, is a friend... And then there's "Eurotrip," which wasn't a very good movie. Damon shocked the dozen or so people who actually paid money to see this movie when he appeared in the last scene singing "Scotty Doesn't Know." "I went to college with the three directors," Damon explained with a laugh. "They asked me to do it, and I did it. They're my friends from college; what else could I do?" "