Paul Walker is wearing a Panerai PAM000028 Luminor Power Reserve Special Edition from 2009 which features a Hob Nail dial, and the wrist shot photo seen below came from British GQ's Twitter Feed, and it said "Interviewing Paul Walker. Mildly distracted by the Panerai strapped to his wrist."
Panerai only made 1000 units of this 2009 Limited Edition, which features an automatic SOPROD 9040 caliber movement, which was the same as the one that was features in the Panerai PAM28A-Series model. The Original 28-A Series Panerai model was made in 1998, and in 1999 Panerai made the B-Series.