Actually, I've got a Second Life account and one of the first few times I tried it out I found a "virutal MST3k meeting." It was actually pretty entertaining. Everyone's avatars sat down and watched a stream of old teen hygeine and drug scare videos from archive.org on the "screen" inside the game and chatted snarky comments about the feature.
pretty cool stuff, actually. Second Life is cool mainly becuase of the creative ways users manipulate it.