Celebrities on Set | Week of Sept. 3, 2012

It was a busy week for Hollywood stars with the Venice Film Festival, Toronto International Film Festival, and the VMAs, but that didn't keep celebrities from working hard on sets all over the world. Ben Stiller traveled to Iceland for The Secret Life of Walter Mitty, while Chris Pine hit the streets of NYC on a motorcycle for his latest project. In London, Cameron Diaz took to the set of The Counselor, and the boys of NCIS: LA, LL Cool J and Chris O'Donnell, hit the beach in SoCal for some action-packed scenes. Click through to see more stars on the set!