The song "Popcorn", played by Hot Butter, has been remixed many times, (as nuage has mentioned). For instance,
Caustic Window (a.k.a Aphex Twin)'s remix,
At least three remixes by The Boomtang Boys,
A surf-rock version by Shadowy Men On A Shadowy Planet,
A remix by Jean Michel Jarre,
A remix by Richi M,
And finally, a remix by DJ Bell.
Collecting all the versions of Popcorn can be a fun excercise in Napsterism.