The Bushman has been a fixture at Fisherman's Wharf for many years. His m.o. is to hide behind a shrub of his making (branches strung together) and leap out at unsuspecting tourists along the boardwalk at the Wharf.
For his efforts he earns some cash, and both the shocked expressions of his victims, as well as laughter from nearby spectators.
See a larger photo of San Francisco's Bushman.