Venom? Dumb? Surely not:
http://youtube.com/watch?v=udBKbqeSgOg
In the Woods are totally underrated in my opinion. Although their style might be a bit soft for some, their first two albums, Heart of the Ages and Omnio are amazing. They're dreadful now, but those two are sheer class:
http://youtube.com/watch?v=MEDz_Y_6MaE
No other BM song comes close to Burzum's
Dunkelheit though.