Jason Lee Puts Up Reward For Stolen Dennis Hopper PicJason Lee is one of the funniest guys in Hollywood, but there's one thing the actor doesn't joke around about: his stuff.

The 'My Name is Earl' star is hopping mad after a sticky-fingered art enthusiast stole a one-of-a-kind photo of late actor Dennis Hopper from a Highland Park gallery show hosted by artist collective THIS Los Angeles.

PEOPLE reports that the 8 by 10, black-and-white Polaroid still of Hopper was simply lifted off the gallery wall following Saturday's show, a crime that has left Lee "devastated" and offering a $25,000 reward for the photo's return.