My favorites are in my opinion: Cannibal Corpse, Behemoth, Slipknot, Avenged Sevenfold, Iron Maiden, Megadeth, Earshot, Metallica, Opeth, Shadows Fall, Metroid Metal, Powerglove, Slayer, Saliva, Stone Sour, Korn, GWAR, Lordi.
Lol also the indie rock and pop band I like is Hey Ocean! Lead singer is the voice actor of Rainbow Dash and Applejack, Ashleigh Ball.
At last time i discover huge area of japanese metal. Never hear it before, and now i just fall in love with several things, like Unlucky Morpheus, Waggakiband, Undead Corp, etc. Also i still love what i loved before: Quo Vadis, The Seer, Ouroboros, The Agonist, diablo Swing Orchestra, Chthonic, Before The Down and many nany others. Not only metal, also love classic rock, rockabilly, blues, folk.