When I played through Dark Messiah, I noticed it had some http://www.youtube.com/watch?v=GIYHgCjFgk0 that gives off a creepy-dungeon vibe. Pay attention to the background music in the video. It would be nice if Jeremy Soule takes this sort of direction with dungeon music.

What do you think?

I agree. The music is more subtle and has an appropriately discordant, dark ambient feel that suits dungeons well. Some of the dungeon themes from Oblivion were pretty decent as well - but I think Soule could always learn some things from other composers.