Right now I just finished an Anarch play-through of VTMB. I swear that ending never gets old.
An interwebz buddy of mine told me Tales of Borderlands (Is that what it's called?) is pretty good, so I may end up buying that later. Hopefully the game is good for two play-throughs, though, I doubt it.
I'm also trying to get into Borderlands the pre-sequel, but I kind of suck at FPS games an I've got no one to play it with.