avoid GS Wonderland, I Sell the Dead was fun at times but mostly meh (with some of the worst production values ever)
My Dear Enemy could've been 15 minutes shorter but isn't all that bad. 20th Century Boys is a big time commitment (and the 3rd film hasn't come out yet) but its a nice live action take on a Manga.
I'd love to check out Yatterman, Thirst, Lesbian Vampire Killers & Dream.