I've already said this to someone, but I'd like to say it again: I dislike that there isn't a McCoy/Chekov fanmix. Maybe this thread will result in one.

Personally, my song for them is 'Four in the Morning' by Night Ranger - no idea why. bones/Jim is "Craving (I only Want What I Can't Have)" by Tatu, Jim/Spock (idk why they're all for pairings) is "Do What You Want" by OK Go.

I'm pretty sure I have other songs that make me think of just one character and not a pairing, but right now, those are the only songs that come to mind.


EDIT:

I feel like such an idiot. Cobra Starship's 'Hot Mess' is totally Jim's theme song in my mind.