Your theme song?

[TheAsterisk!]

"Does It Really Happen?" off of Yes's Drama is a sure choice. The lyrics never quite explain themselves, it has an almost overbearing bassline, a nice dose of syncopation, and the instrumental conclusion is the greatest minute and a half to two minutes of music that can be heard. (I could easily see it being used to segue into the credits at the end of a comedic action movie.) The feel of the song is that it just strolls into the room and immediately commands everything and everyone to do its bidding, and everyone is just all too happy to help.

You can listen to the whole song on Chris Squire's (the band's bassist) website. Much better quality than whatever over-compressed, legally dubious copies are up on YouTube.
http://www.chrissquire.com/music/drama?songcategory=42