Maybe not my all-time favorite (picking one would require a lot of thought), but the first one that came to mind was Time, by Hans Zimmer. LINK
ETA: I heard it on my iPod today, that's why.
Also really like Clubbed to Death from The Matrix (LINK
). Somebody mentioned The Big Lebowski earlier - a couple other good songs I remember from that are Lookin' Out My Back Door (CCR) and The Man in Me (Bob Dylan).
This post was edited on 2/13 at 8:31 pm