After reading around the internet for a while, it looks like you can use the Dolphin GC emulator to play online. It'll probably have input delay and might not be ideal as far as netplay goes, but from what people are describing it does work.
so would you guys be interested in playing SSBM this way? everyone lists SSBM as the game they're best at, everyone has put SSBM Online on their wish list, so this seems like something that would appeal to the board.
I main Marth and second Link. But... I'm pretty happy with Brawl and playing a few rounds of that over beers with my friends. Probably won't participate but I'll let you know if I change my mind.
I am one of the worst Melee players ever, even my button-mashing sister can beat me. I'm slightly better at Brawl - at least I have some idea of how to control the characters, even if I can't execute them very often! But yeah, I think I'll stick to something luck-based like Mario Kart.