Celebs did more than just give autographs to fans while milling around the white tents on the Santa Monica beach at the Independent Spirit Awards. Many signed a Harley-Davidson Softail Deluxe motorcycle, which will be auctioned off on EBAY between Thursday and Sunday.

Proceeds go to Film Independent's Project: Involve program, which provides mentors and education to budding filmmakers. Getting them all revved up by signing the motorcycle were such stars as Naomi Watts ("King Kong"), Sienna Miller ("Casanova") and Terrence Howard and Matt Dillon ("Crash").