Captain Falcon: It's tradition. Demolishing my friends with The Knee, dominating party matches with well-timed Falcon Punches, juggling people with his Uair and Bair, and most importantly, showing my moves. Some things about Falcon really suck in Brawl compared to Melee, but I think overall he will still be very good and I'll still be able to be good with him.
Besides him, I plan on trying out everyone, but specifically Toon Link, Pit, Lucas, Lucario, DeDeDe, Metaknight, Olimar, and Gannondorf. I'm sure at least a few of those will work well for me, so those that do I will keep playing as and those that don't I'll probably not play very often as.