Not much of an anime watcher since I don't have fast internet or uncapped, but I read quite a bit of manga. Some of the best manga I've read in the last year is The Breaker, The Breaker: New Waves, Veritas, High School of the Dead, Eden No Ori, and some others that I can't quite think of at the moment.

The worst is undoubtedly Gakuen Heaven. It has a weak story and is basically thinly veiled hentai. Wasn't expecting it since the start was almost decently set up (besides all the panty shots).