I always do, strangely enough. I always leave after the credits of a film, or change the channel, but for whatever reason, after a game, I like to think. Alternatively, I can do other things while it runs in the background. Games like KH, however, tend to keep credits interesting, since they're mixed in with the epilogue, which has important information in it. the music is usually really good too. I wonder why so many people do it with games, and not so much with films (assuming there's not a stinger at the end).