Opeth is my favorite band, but stuff I listen to besides opeth (and I like to keep my musical tastes very broad), are:
Blood Bath (also Mikael Akerfeldt!)
Cradle of Filth
Deftones
Dimmu Borgir (first metal band I ever heard)
Fireball Ministry (they opened for opeth and I loved them)
GWAR (hilarious live)
the Haunted
Helloween
Hypocrisy
In Flames
Katatonia
KMFDM
Mindless Self Indulgence (also hilarious live)
Naglfar
Napalm Death
Nevermore (saw them with opeth, also hooked)
Nine Inch Nails
Novembers Doom
The Project Hate (I got the song At the entrance to hells unholy fire free somewhere, its a great song try to find it)
Radiohead (lightest. stuff. ever.)
Rammstein (hot live. and by hot I mean lots of fire)
System of a Down (first rock band I heard)
Vital Remains
And also the website metalstorm.ee. it has free downloads of independent bands every month, sometimes big people like Annihilator or Nevermore.
Blood Bath (also Mikael Akerfeldt!)
Cradle of Filth
Deftones
Dimmu Borgir (first metal band I ever heard)
Fireball Ministry (they opened for opeth and I loved them)
GWAR (hilarious live)
the Haunted
Helloween
Hypocrisy
In Flames
Katatonia
KMFDM
Mindless Self Indulgence (also hilarious live)
Naglfar
Napalm Death
Nevermore (saw them with opeth, also hooked)
Nine Inch Nails
Novembers Doom
The Project Hate (I got the song At the entrance to hells unholy fire free somewhere, its a great song try to find it)
Radiohead (lightest. stuff. ever.)
Rammstein (hot live. and by hot I mean lots of fire)
System of a Down (first rock band I heard)
Vital Remains
And also the website metalstorm.ee. it has free downloads of independent bands every month, sometimes big people like Annihilator or Nevermore.