Surfing the net and I found this wonderful piece from The Simpsons, one of my favourites. Its the scene where Bart gives the churchgoers the words and music to a hymn he says is Garden of Eden by I. Ron Butterfly. When Rev Lovejoy's realises what the congregation are singing he utters the classic line "Wait a minute, this sounds like rock and/or roll."
Anyone over 50 will get the joke because they know the song referred to is Iron Butterfly's (I. Ron Butterfly, geddit?) 'Inna gada da vida' a song famous for its lengthy organ solo that went on and on and on. Want to see the original? Its here An interesting bit of trivia is that when the band released the album they couldn't play in bars or nightclubs in the US as several of the bandmembers were under the legal drinking age of 21.