Pretty good series. I think it's now in its second season. A vampire, ghost and werewolf become friends and try to help get each other get out of trouble.
Ok, this is a lame description, but the series is actually pretty good. If the Twilight series hasn't completely jaded you from the genre, give it a shot.
It's pretty dark. If I had to compare it with anything, I'd say it's similar to Angel... the Buffy spinoff.