Matt Damon
Matt signed it on 3/21/05 in the Palms Poker Room.

Matt, Ben Affleck, and Toby Maguire came in together and played hold-em several times. Mostly $10-$20 No Limit.

Security called them the 3 amigos as they followed them around keeping the hotties off of them.

The ladies formed in mass around the poker room, even blocking the rest rooms. I noticed all 3 signing a few chests.

J Lo was with Ben.
Tid bit: He did not tip dealers if J Lo was sitting beside him. He doubled up when she left to play BJ. Heard the same thing from dealers at the Mirage.

BTW, The Rounder's chip was the 1st Paul-Son H&C value chip at the Palms.