The Ludum Dare website. On my second-ever visit. Good times...
Absolutely anything, but a good RTS, sandbox, or general strategy are my favourites. I like everything from SimCity to Space Invaders, Minecraft to Magicka. Anything that can make me laugh, cry, squint, huff, or react at all, is generally good.
I do have a particular soft spot for 'so-bad-it's-good' games.
Eat Bran Flakes!
What's green and has wheels?
Grass. I lied about the wheels.
Re: "I do have a particular soft spot for 'so-bad-it's-good' games."
Great minds think alike: http://www.formspring.me/Sosowski/q/334488790708027087