hmmm.... there are a lot :) But, one that goes back pretty far and reminds me of an event every time I hear it is Pinch Me by Barenaked Ladies. There were some Japanese books that we got from one of our old Japanese students, and one day I was reading one of them while listening to the Barenaked Ladies, and now for some reason this song reminds me of that day I was down there reading it. The book was Doraemon, btw, if anyone wants to go look it up. It was pretty wacky.
That's a live version, and you can go find the other version if you really wanna listen to it. Embedding was disabled. I'm guessing most of you know that song though.