I definitely love the Skyrim theme song. It's by far the most inspirational of the TES music pieces to come out yet. I know I posted at one point about running around swinging an imaginary sword to it. That being said, nothing beats the Morrowind theme for me. That music invokes so many fond memories for me. Every time I here it I'm immediately running through the wilderness of Vvardenfell, or slowly walking the rain-slicked cantons of Vivec. Like I've also said before, Morrowind is the dramatic story driven novel to Skyrim's grandiose epic, and the soundtracks of each fit perfectly.