Does anyone know any metal bands with music that might be fitting for Skyrim? Personally I wouldn't play anything instead of the great soundtrack while playing the game, but some music might get you "in the mood" to play Skyrim, and here are a few that I can think of:
Bathory - Nordland 1 & Nordland 2 (the album titles kind of speak for themselves =) )
Amorphis - Skyforger (Lyrics focus on Kalevaala, the national epic of Finland, fits Skyrims northern setting)
Moonsorrow - Kivenkantaja (Track 5 has some great atmosphere, you can almost feel the cold winds around you)
There are more, but those are the first that come to my mind. Do you have any other tips?