In this classic episode, David puts the infomercial king Ron Popeil to the test after Ron personally asks him to review his air purifier. He also breaks down how to buy a home computer in 1983, exposes a $250,000 sweepstakes no one will ever win, investigates the risks of sunlamps at tanning salons, and answers viewers' questions. Show: 8222 VTR: 2.17.1983