About a year and a half ago Caesars started laying new felt on their tables... and did something different. Instead of removing the old felt, they put the new felt on top of the old which made the tables more bouncey and eliminated the "clang" of hitting the felt on top of the wood. I wrote a piece on this change and have a photo of it here (after the story about the fire bet at Rincon):

http://alanbestbuys.com/id139.html