Well, now that I gpt my “Crosby, Columbo and Vallee” reference out of the way—the late Howard Keel. Yummy.
Gene Clark …Bar None
I much prefer Chet Baker’s version. He just captures something that makes me well up everytime I hear it.
I’d like to vote for David Sylvian, recently heard on those insurance commercials singing a bit of “Somewhere” from West Side Story. A wonderful, smooth deep voice…
David Gilmour/ Roger Waters (Pink Floyd)
David Draiman (Disturbed)
I’d have to say Ben Gibbard from Death Cab for Cutie and the Postal Service. He doesn’t have a huge range, or any particular quirks, but I just love his voice. It’s simple and sweet.
I would also have to say Thom Yorke from Radiohead. His voice is kind of strange, but it’s also lovely in its own way.
Harry Belafonte
What?!?!?! This many replies and no votes for Seal? 
Fisher is probably more famous abroad than he is at home, outside of opera or stage musical circles. If you want to listen to some good, popular male Israeli voices, buy something by Yoram Gaon or Arik Lavi. The sexiest Israeli singer is IMHO Arik Einstein, but he’s a bit of an acquired taste.
I’d agree that he does have a beautiful voice. However, while I like the two bands, I never really got into his voice, as it sounds too generic for me: alternatively at times I’m reminded of the Smiths, Depeche Mode, and Pet Shop Boys.
Howyadoin,
Freddie Mercury
Al Green
Marvin Gaye
Elvis (both of them)
Robert Plant
Pete Townshend
oh… and me 
-Rav
Gee, I haven’t looked at this thread because I figured lots of people would have already nominated Barry Manilow (sexiest) and Clay Aiken (most beautiful). Instead, I am the lone wackjob.
However, I did appreciate the nominations for Alice Cooper, Freddie Mercury, Roger Waters, and David Gilmour.
My favorite male singing voice belongs to James Hetfield of Metallica. May not be sexy sounding to some, but he sure is to me!
Hetero female here. Last time we had a thread like this, I think I gave these same answers. But what the heck, my taste hasn’t changed since then.
Beautiful but not sexy:
Clay Aiken
Dietrich Fischer-Diskau
Mandy Patinkin
Mel Torme
Sexy but not beautiful:
Sting (sex on a stick, IMO)
Robert Palmer
Robert Plant
SexyBeautiful:
Len Cariou
Howard Keel
Sinatra
Marvin Gaye
Placido Domingo
Thomas Hampson
Murray Head (Judas on the original Jesus Christ Superstar recording – for that matter, Ian Gilliam as Jesus ain’t too shabby either)
Gordon McRae (le sigh!)
Billy Joel
Stevie Wonder
Paul McCartney (who wins on flexibility – from the romance of “Michelle” to the raunch of “I Want You/She’s So Heavy”).
I’m pretty sure that John Lennon sings “I Want You/She’s So Heavy.”
Darren Hayes… he may sing some bad songs but he has a fabulous voice.
Another one for Roger Daltry.
Also, Deano! Dean Martin could blow Sinatra off the stage. Not that we would, ya know mob connections. But he could!
Cheers,
Vega
Michael Stipe. Shaun Verreault of canuck band Wide Mouth Mason. Daaamn his voice is so throaty and sexy, even if I am not their biggest fan. Yum. (:
Don Williams. His voice is like coming in from a cold, rainy night to sit wrapped in a blanket next to a blazing fire–warm, welcoming, comforting.
Josh Groban has a magnificent voice. I admit his song, “You Raise Me Up” moved me to tears when I saw him perform it at the last Super Bowl.
Raul Malo, lead singer for the Mavericks, can give me chills. There’s a real haunting quality to his voice that I love.
Oh, and I’m a straight female.
Josh Groban. I don’t understand how there is even a contest. I can only imagine how he will sound after another ten years of perfecting and training his voice.