I have many... Here's a quick list
1. Iron Maiden - Bruce Dickinson's voice is unmatchable...
2. RAMMSTEIN - I've seen them in concert at least 30 times, have all their albums and singles (even the rare ones) They set shit on fire... They're German... And they are HOT stuff... Gotta love 'em
3. Alice In Chains - Layne Staley had the most recognizable voices in rock (may he rest in peace) They wrote really strong songs, and kicked it in the nuts live.
4. The Clash - Punk mixed with reggae... Add a pinch of politics and you've got genius. Joe Strmmer was one of my heros!! (RIP JOE!!)