I'd heard the song "Iko Iko" performed by Zap Mama before, I think in the early 90s, as a friend had it on a mix tape. You may have heard it in the rock-climbing scene in the movie "Mission Impossible II."
Then, recently, J. and I got ahold of some DVDs of SCTV, and Dr. John was a guest, playing piano and performing "Iko Iko." I hadn't realized the song had been around as long as it had, and Dr. John's interpretation was *quite* different than the Zap Mama version.
Scroll down almost to the bottom (to the year 2000) on this page to see the paragraph about the song's inclusion on the soundtrack to MI:2:
http://houbi.com/belpop/groups/zapmama.htm