iStock/gaiamoments1986: The sitcom "Diff'rent Strokes" airs its final episode after eight seasons. The series, which starred Gary Coleman and Todd Bridges as two black boys from Harlem adopted by a rich white businessman named Phillip Drummond (Conrad Bain) and his daughter Kimberly (Dana Plato) for whom their late mother previously worked. The show was a ratings success for several seasons, but was canceled after several seasons of sagging ratings.