What is some of your favorite background or thinking music?

oh, I forgot about two steps from hell / Thomas Bergersen (he has a lot of stuff under just his name). I'll tick on E.S. Posthumus, don't know if they have any movie music, but they certainly have the epic soundtrack style. x-ray dog is another one of the companies that puts out tons of soundtracks.
I'll have to give those others a listen.