I love Angelo Badalamenti... His music for the series and the final film is mesmerizingly beautiful. If you have not yet seen the show, the premise for it is very haunting - and this music fits it perfectly. The movie is by far one of the strangest I've seen, but the music made it one of the greatest. I love Badalamenti and composing for Twin Peaks is probably one of his greatest accomplishments.
I really love "Twin Peaks Theme" and "Laura Palmer's Theme."