Myself i tend to put on a oldie station that pays a good selection of what considered Classic hits from the 60's to the beginning of the new millennium!
I prefer to write to classical. No lyrics to distract you and most great movies are scored with it.
I listen to either video game music or a band called Delain. They're a Symphonic Metal band out of... Holland I think, I may have to look it up, and their lead singer Charlotte has the perfect porn-writing combination of being incredibly sexy and having an incredible voice.
Another one in the classical category, but I'm kind of odd: it's not the slow sensual stuff, but the things that would not quite be out of place in a club that I groove on: The 1812 Overture, Bethoven's 5th, night on bald mountain, etc...
Sorry forgot that youtube isn't that friendly when searching for some unknown non american bandsCan't say that I have, and all that comes up when I Google them is a programming language and of course the secret agent...
EDIT: could you please toss me a link?