The Lepo theme creeps me out: http://www.youtube.com/watch?v=nTs0g-4cY_4
Unless by "creepy" you simply mean "ambient," in which case there is little in RE6. There's a few tracks during Leon's campus sections that are eerie, but the rest of the game is too action-packed to really utilize this style of music.
Using creepy music in a game that's 90% action kinda flies in the face of logic. I do think that the soundtrack, while not reaching the heights of previous titles, suited it quite well though. Like SolidStryder said, the track that plays during Jake 2/5 is great, extremely well suited to 5 in particular. Just a shame it stops after the first battery!
Reminds me a bit of the old music, and also MGS to some degree. "Escaping Confinement" - http://www.youtube.com/watch?v=4W_F5NvHhCs --- /thread PSN: Anthropomancer