VIDEO: David Hasselhoff Knocks '80s Medley Out of the Park on AMERICAN IDOL

Tonight on AMERICAN IDOL, David Hasselhoff made a surprise appearance to perform an '80s medley. Watch him knock it out of the park below!

The medley featured Queen's "Crazy Little Thing Called Love", Katrina and the Waves' "Walking on Sunshine", Rick Astley's "Never Gonna Give You Up", Culture Clash's "Do You Really Wanna Hurt Me", David Bowie's "Let's Dance" and Joan Jett & The Blackhearts' "I Love Rock 'n' Roll".

Hasselhoff is best known for his roles on BAYWATCH and KNIGHT RIDER and has recently appeared on DANCING WITH THE STARS, BRITAIN'S GOT TALENT and AMERICA'S GOT TALENT, as well as THE SPONGEBOB SQUAREPANTS MOVIE.

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