Consoles are nice for "in house" gaming with a bunch of friends. I have just about every light gun game for PS2! Consoles are also better for sports games and arcade/fighting games.  Plus, it's harder for people to cheat online at console games.

That said, I play on my PC way more. I Play various FPS with many of the same guys I started playing Unreal Tournament '99 with 10+ years ago. I sometimes play RPGs too. I played Dragon Age, and it reminds me of a cross between NWN and Temple of Elemental Evil.(A D&D 3.5 game) DA is very beautiful, has a decent combat system, but is a little too linear. PC also better supports deep open-ended 4x strategy games, such as Space Empires or Dominions. (The type I like to play when i'm in a creative and calculating mood.)