SSBM is definitely the best thing about the GameCube. We were talking about it earlier, kinda like this:
Me: I don't know if I should save my money for the Revolution or spend it now. I'll probably go crazy if the new SSB is out for too long without me playing it.
Friend: SSBM is awesome, have you gotten Roy?
Me: Well... I've got everything.
Friend: His B attack's the best, but it takes forever. I usually use Ganondorf.
Me: I use Mario.
Other friend: What about that weird guy, who goes "Falcon... uh..."
Me: Falcon, PUUUNCH! *punches other friend*