Wow, no one mentioned Mutiny Within. They fukkin slay!
http://www.youtube.com/watch?v=LvWDFGuBD_Y
Mine would be:
1) Overkill - Ironbound
2) Fear Factory - Mechanize
3) High on Fire - Snakes for the Divine
4) Mutiny Within
5) Arsis - Starve for the Devil
Some great songs also. HoF - Frost Hammer is incredible as are the 1st 3 Overkill songs