Year One is good, I'd say maybe stay away from The Dark knight Strikes Again. I have it downloaded and I'm glad I didn't pay the money for it. Hush is pretty good, but the best Loeb batman is The Long Halloween. Dark Victory is pretty sweet too, about as good as Hush. I know Ab didn't like it, but I found myself enjoying The Cult quite a bit too even though it is a blatant rip off of The Dark Knight Returns except the writer (name escapes me) thought it'd be good to use a thesaurus. I personally enjoyed both of Kevin Smith's books, Cacophony and The Widening Gyre, I hope he finishes the trilogy off.
I picked up one a while back called Arkham Madness I think, it was done by Sam Kieth who did The Maxx which I'm sure most of you know. I thought it was alright, a little bit scatterbrained and a clear homage to Arkham Asylum, which is a must have. the one shot Joker by Brian Azarello or whatever his name is is also pretty sweet and I'd suggest getting that. A couple more good ones are The Man Who Laughs, Batman: Gothic (gotta love Grant Morrison) and the three Batman/Dracula comics. The latter of which are more just silly fun, but they're entertaining nonetheless. However I would suggest downloading them instead of buying them because I remember I was looking to buy them and htye were all ridiculously expensive.