Best Multi-player?

Goldeneye really was great.

Counterstrike is in a league all by itself.

I liked Super Smash Bros over melee simply because they gimped Mario a bit in Melee, and he was my character of choice in the old one. Still, the Super Smash games are the funnest to play with a few friends.

Mario Party really isn't too bad. If you have some good competition, it's really quite fun.

I detested Halo. I don't know if it's because of the dual-analog controls or because I'm not particularly fond of the Xbox or... I'ono. I was playing Counterstrike probably two years before Halo came out, so it was no big shit to me. CS pwns it.