In no particular order or ranking:
Serj Tankien - System of a Down/solo : I just like the way he can manipulate his voice so many ways. He's got incredible range.
Marvin Gaye - Solo : The man (when he was living, of course) could sing so many ways he even could sound like an alto sax when he was just going along with the melody.
The Beatles - um.. The Beatles : Paul McCartney alone has a fantastic voice and Lennon and Harrison as well. I'm not sure if I can lump an entire group together like this, but when they were harmonizing it really is just pure excellence.
Sarah McLaughlin - Solo : You cannot deny that she has a beautiful voice. Her music selections and what she sings isn't always the best but she sounds heavenly.
Andrea Boccielli - Opera : He's blind, doesn't really speak English, he could sing the back of a box of crackers and it would bring tears to my eyes.
Tori Amos - Solo : Yeah, yeah, she's weird. She sounds great doing it though. Fantastic range and the purring sounds she makes when she's singing low just drives my ears nuts.
David Bowie - Solo : I love the way he sounds. He can get bluesy, funky, wild, maniacal... its all good to me. If you listen to something like Hunky Dory (1971), the song "Life On Mars?" or "Kooks" you can really get a feel of how his actual singing voice can be.
I could be here all day doing this, so I'll just stop there :3
