Just 5???
1. Opeth - Blackwater Park (duh)
2. Katatonia - Last Fair Deal Gone Down
3. Andromeda - Extension of the Wish (best debut of 2001)
4. Amorphis - Am Universum
5. Dog Fashion Disco - Anarchists of Good Taste or Adagio - Sanctus Ignis (Bungle-influenced hardcore and Neo-classical metal).