Oscar-winning actor Kevin Spacey knows how to properly photobomb unsuspecting participants, even if he ruins the stealth factor in the process.

Danish tourist Christina Sander was getting her pic taken in front of the George Washington Statue in Boston's Public Park when Spacey ran up to her, yelled "this is a photobomb!" and then ran off, waving gleefully as he went.

The snap went viral after a friend posted it to Reddit, and that's when we learned Kevin is apparently working toward becoming the preeminent celebrity photobomber of 2013 -- he also showed up in a recent photo of Conan O'Brien and Matthew Perry's.

He should charge for this sort of thing. He'd make a killing at weddings and bar mitzvahs.