At Gen Con 2006 I found a new product made by Open Mind Games. The product is called a Combat Pad and it is meant to make combat easier for a GM to run in a d20 game. You can write on the pad with either wet or dry erase markers. Additionally, the pad includes small magnets that you can write both PC and NPC names on and move them around easily. Further, it is easy to keep track of the number of combat rounds that have passed by using the track at the top. I have used this several times since Gen Con and absolutely love it.