My favorite anime I've seen is probably Paranoia Agent.

Others I really like: Boogiepop Phantom, Darker than Black, Cowboy Bebop, Evangelion (from what I've seen), Gunslinger Girl, Full Metal Alchemist: Brotherhood, Toradora, and Clannad After Story.

Honorable Mention: Melancholy of Haruhi Suzumiya

Nostalgic Anime: Pokemon, Dragon Ball, Dragon Ball Z, Yugioh

Sort of Guilty Pleasure: Fruits Basket

Biggest Letdown: Eden of the East. I love this one in concept, but I don't think it was executed very well in the end. That being said, I want an Air King poster and/or shirt.

I will say that while Cowboy Bebop is almost universally seen as great it seems, I do know quite a good number of people that really don't like it.