Jose Feliciano.
Old Turkey Buzzard… Old Turkey Buzzard! Flyyyyyyying high!
Another vote for David Bowie in the sexy category. J. J. Cale’s voice also does it for me.
Furthermore a lot of rootsy world music comes up with many beatiful and/or sexy male singers. Particularly passionate Italian and Arabic singers float my boat.
Another vote for Peter Gabriel – I frequently bug Mr Readmore by alternating between studio and concert versions of Secret World tracks. ahhhhhhhhhhhh.
And when I’m driving home, late, in the dark, I always (if safely possible) pull off the road to listen to radio’d Chris Isaack tracks - and watch the stars and meterorites. Shhhhhhhh.
…uh, where was I?..
For 50 years now, Chances Are I get Misty and give a Certain Smile to Johnny Mathis, who is just Wonderful, Wonderful!
Im really digging Ray LaMontagne’s voice these days - plus he has a very cool story
Robert Plant
Brad Roberts (Crash Test Dummies) – that nice, deep, resonant voice. Mmmm mmmm mmmm mmmm!
Yipe, I’m a nimrod, of course you’re right! I meant “Oh Darlin’” – guess I got confused with my sexy Abbey Road songs. Also “Why Don’t We Do It in the Road” is pretty raunchy as well.
The boy has pipes, that’s all I’m sayin’. 
I forgot Nat King Cole in my list. His voice was like liquid silk.
For the most beautiful, I’d have to say Neil Tennant in certain songs (“Miracles,” “Home and Dry,” “Closer to Heaven,” “Radiophonic”).
I’ve currently got a thing for the O-Zone singer who does “Dragostea Din Tei,” I have to say.
Nooooo… I had just gotten that song out of my head…
::sobs::
Anthony Warlow, absolutely. I got three more of his albums for Christmas and am in a state of constant Warlowgasm.
Josh Groban after him, although he sounded a bit crap on his latest DVD. 
I’ve always been a big Metallica fan, especially the older stuff, but I never thought of Hetfield’s voice as sexy. Then, when I was 18, I met him. The man is extremely charismatic. Now his voice is sexy to me.
I’ll add my vote for Freddie Mercury, Nat King Cole, Sinatra, Trent Reznor, Harry Connick, jr.
I think Hugo Ferreira of Tantric has a sexy voice.
I also like Usher and Brian McKnight. I consider both to be smooth and sexy.
Forgot to mention Snoop Dogg.
Snoop Dogg.
Sexy.
Woof woof.
I’ll second Thom Yorke. He sounds positively angelic at times, and is excellent at phrasing.
I was ipodding my way to work the other day, and Need You Tonight came on, and I thought that the day that video came out, no one was more sensual, sounded hotter, or looked better than Michael Hutchence. He was hotter than a ten dollar Rolex.
And they’re doing a reality show to replace him - it’s truly the End of Days.
For the beautiful list, we’ve gotta add Smokey Robinson.
As a straight guy:
**MALE SINGER I’D LIKE TO SOUND LIKE FOR MY FANTASY OF WHAT WOMEN LIKE:**Johnny Cash. No contest. Strong and confident, yet quivery, sad, and polite. And gravelly.
**MALE SINGER I’D LIKE TO SOUND LIKE FOR WHAT WOMEN REALLY LIKE: Chris Isaak. Again, no contest. Wicked Game played at just the right time has served me well. Every bloke should have a copy of this song. 
I think it’s a beautiful song too.