This is my all-time favorite anime ever. I think it's great that cartoon network adopted it almost immediately after the show finished in Japan. I remember downloading the new ripped episode every week - this series is classic.
2-d fighters, such as street fighter II (are you really surprised? :P) 2-d sidescrollers, such as megaman, & First Person Shooters. I used to play strategy game and RPGs, but those are just too time-consuming for me now :P