American Chopper profiles the lives of New York natives Paul Teutul Sr. and son Paul Jr. of Orange County Choppers (OCC), creators of the world's most outrageous custom motorcycles. Follow the day-to-day drama of this volatile father and son team as they battle impossible deadlines – and each other – to push the envelope of motorcycle design and fabrication.Actor Bill Murray contacts OCC to build him a chopper inspired by his crazy Caddyshack character, Carl.While Jr. is busy building – with some help from Mr. Murry himself – Senior and Mikey practice their swings at Mikey's house while they're in the midst of some demolition work.When all is said and done, after a journey to the links with Bill Murray, and despite a small mishap with the paint job, the cool, custom-made Caddyshack chopper is auctioned off at a golf tournament to benefit Florida's St. Vincent's Mobile Hospital.