I've been trying to be more diligent in getting through my TBR piles in the past couple years. Things like the reading challenge at GoodReads helped me a lot last year. I actually managed to hit my quota of 52 books for the whole year. That doesn't include the over 100 I started and didn't bother to finish because they weren't worth the time.
Random House created a Reading Bingo Challenge that looks like fun. Basically, it's a bingo card with various types of books in each of the squares.
I get to cross one square off already, but I'll talk about that later this week. I'm writing a review on it. It blew me away.