When in high school, we would occasionally have parties with all sorts of gaming and food and dammit I want to do that again.
Anyway, there was always the Halo corner, the 2 PS2 guys, and the Cube corner, plus some Starcraft guys [this was a computer programming class mind you], but that another matter entirely. I would always play some Halo, then get bored of dying to the absloute perfection that was Tucker and Patrick [i think], then play some Smash with the cube guys. When I played smash, I was untouchable. Literally. Samus doesn't take prisoners.
My favorite moments have to include the only time someone wanted to go one on one with me. I went as Fox and they were Ganondorf. They were in the air about 90% of the time and I took a total of about 40 damage by the round end 5 minutes later [time match].