I really only game these days competitively, MW3, League of Legends, FIFA Street here and there.
I played Halo 2 and 3, and Smash Bros Melee in actual MLG and other league tournaments in Toronto and Montreal.
As far as competing, I'm waiting on DotA 2, and Diablo 3.
Anyone relate to MLG style gameplay?
Here's a dope vid of the best Halo 3 team that I met playing in Toronto in 2009: