"Thousand Miles", although the name of the artist escapes me. I only know two lines from the chorus and words from the opening. That's it. It'll drive me insane when I'm driving to work in a good mood (Yes, I'm a closet car singer).
Anyway, beyond that, I've only had a theme song from "28 Days" stuck in my head before. That movie has become 'the movie' for my friend Megan and I. I think we've watched it like 12 times together in the past two academic years.