6. David Bowie in Extras (2007)
Things are looking up for Ricky Gervais’ character Andy Millman when David Bowie calls him over to sit with him. But then things go south when the Thin White Duke makes up a song about what a giant loser he is, and gets the entire club to sing along.
Bonus points also go to Bowie for his unforgettable Christmas special apperance with Bing Crosby back in 1977.
5. Alice Cooper in Monk (2006)
Cooper guest starred in the “Mr. Monk and the Garbage Strike” episode of the USA Network hit show, with Monk accusing the shock rocker of murder during a break in the case.