Jim will sign most anything, but the limit is three per person per trip. He wants to get everybody, so after the first three, you go to the back of the line. He has two signings tomorrow: the first is from 12:00-1:00 at the Penguin Booth (2414), and the second is the official con signing from 4:00 to 6:00. However, the official con signing is being ticketed, and IIRC, there will only be 100 tickets. Those are handed out at the Penguin booth (2414) at 2:00—and it's first come, first serve.
//Edit//
Uh-yup. I lied.
Jim is at the official con signing form 12:00-1:00 at table A4. The Penguin signing is from 4-6 at booth 2414, and is ticketed. 100 tickets will be available starting at 2:00. First come first serve.