The only anime I'm currently following is "Shiki." It's a new horror/mystery series I decided to check out because I was a "Higurashi no Naku Koro ni" fan. The pacing seems rather slow right now, though, and the character designs are a bit odd. (shrug)
Manga-wise, though, there are a variety of series I'm always happy to see updates for, including "The World God Only Knows" (getting its own anime this fall - squee!), "Yankee-kun to Megane-chan," and "Liar Game." The first two are great comedies imo. The third may not have the best art, but the psychological mind games are so interesting to read.