What sorta effects, aside from distortion, are commonly usedin metal? Metal as in priest, maiden, metallica, cannibal corpse, arch enemy, dream theater, cob, in flames, dark tranquillity etc etc etc.
Wah-wah pedal, chorus, flanger, reverb... Pantera and some other bands have used Wahmmy pedals and stuff too.
delay, phase (just to add to the list ^)
Wah, Delay, Phaser (Evh), Overdrive and a Noise Suppressor.......