My favorite flashs are escape games, like Crimson Room. I also like CCGs, Rogue-Likes, and Tactical RPGs. I hate TD, music games, and platformers. Outside of that, I kick it with fighting games of which I’ve easily played 3 dozen. FPS flight sims are fun, too. There, you have my bias.
Wow, you read my profile. Here, have some awesome music: http://www.youtube.com/watch?v=88hZBOmNnNU