Ram-Zet... proggy thrashy deathy metal with male death vocals, female death vocals, female mid-range vocals, and female operatic vocals, and featuring violin leads in parts
I'll third the Scar Symmetry recommendation and second the Bumblefoot.
Scar Symmetry's my favorite melodic death metal band currently. Christian (the singer) is a cross between Mikael Akerfeldt and Dan Swano, and the two guitarists have some pretty amazing chops as well.
Thal/Bumblefoot is quite possibly my favorite guitarist at the moment. He's certainly up there with Mattias (if not ahead of him). I had the opportunity to see him in NYC last week and he totally owns the fretboard.