World's Dumbest ...

Video footage of dumb criminals in 20 incidents; naked bank robber; a crook tries to hold up a store with a 5-foot python; celebrity commentators include Leif Garrett, Tonya Harding, Danny Bonaduce and Todd Bridges.

Sports fans cross the line and become part of the spectacle of an event; indecent exposure at a baseball game; a woman handcuffs herself to a Hollywood star; a streaker gets stung.

A limo tries to outrun police in reverse; a judge who is not sober; a driver tries to get his car under an 18-wheeler; celebrity commentators include Danny Bonaduce; Leif Garrett, Tonya Harding, Todd Bridges and Gary Busey.

Dim-witted daredevils play a game of motorcycle chicken, parachute into a wedding and try to jump a skateboard over the Great Wall of China; celebrity commentators include Danny Bonaduce, Todd Bridges, Tonya Harding and Leif Garret.

Dumb competitions include unicycle football, geriatric scooter races, bra unfastening and flatulence; celebrity commentators include Danny Bonaduce, Todd Bridges, Tonya Harding and Leif Garrett.

Counting down 20 displays of dumb driving; celebrity commentators include Helio Castroneves, Danny Bonaduce, Leif Garrett, Todd Bridges, Gary Busey and Tonya Harding.