The majority of DLC isn't enough to bring me back to a game I've already stopped playing, so I rarely buy it. The Burnout paradise DLC is a good example of why I don't buy DLC. I downloaded the Burnout DLC, played it for 10 minutes, proclaimed "That was cool", and haven't played it since.

I did plan on buying the CoD 4 map pack when it was half price for a weekend, but I didn't have any MS points at the time, MS don't take my type of debit card and I couldn't be bothered to go to the shop to buy some.

Although next year I can see me buying some DLC. The GTA IV DLC looks like it'll be worth my money, and should be able to bring me back to the game.