Credit: Will & Grace: Chris Haston

Memorable ”Will & Grace” guest stars: Janet Jackson

This 2004 guest spot marked Jackson’s first prime-time TV appearance since her Super Bowl fiasco — and her first sitcom work since she made her name as a child star on Good Times and Diff’rent Strokes two decades earlier. Miss Jackson is all business, playing it straight in a plot that sees Jack, fresh from his stint hoofing for Jennifer Lopez, competing for the last open slot as one of Jackson’s backup dancers. His rival is an ex of Karen’s (played by Arrested Development‘s Will Arnett). In the end, Jackson cuts them both, but she makes a fabulous entrance and departs with her dignity intact — not a single wardrobe malfunction joke is heard.