Jack Black is good at both. - Spidra Webster

Scarlett Johansson- Good at both. - Jimminy, CoG of FF

David Bowie is good at both. - Spidra Webster

Zooey Deschanel, although I cannot opine at how she is at either. http://allthesongs.wordpress.com/2008... - Spidra Webster

Not heard Zooey Deschanel sing. - Kol Tregaskes

LL Cool J, Ice-T, Queen Latifah - Spidra Webster

Cher is a good singer, but horrible as an actress. - Jimminy, CoG of FF

Zooey Is good at both - RAPatton from iPhone

Liked for Jack Black - love Tenacious D! - Bette Cooper

Kristen Chenoweth is good at both - RAPatton from iPhone

Kol, are you specifically gunning for people who are actors primarily who do music on the side? Or are musicians who've gone into acting fair game? - Spidra Webster

Cybill Shepherd, a gorgeous actress, and a jazzwoman :) - directeur

I love Jackie Chan - MiniMage, enterRUPPted

Shirley Manson is a great singer and at least a servicable actress - RAPatton from iPhone

Kol, Zooey is the front woman for she & Him, and she does a good job; saw her live last year - RAPatton from iPhone

Billy Bob Thornton. I've only heard one track by his band and it wasn't bad. - Spidra Webster

Dwight Yoakam. I was just wondering the other day what happened to his acting career. - Spidra Webster

James Marsters. I think his voice is reasonably good judging from the Buffy soundtrack (although some accuse him of being off-pitch). I don't know how I'd like his band, though. - Spidra Webster

Mickey Dolenz. VERY underrated as a vocalist. Good as a comedic actor though I wonder how he'd do with drama. - Spidra Webster

Go, Spidra, go! :-) - Kol Tregaskes

Kristen Chenoweth is good at both but musical theater actors shouldn't even count in this question because being a good singing actor is a requirement of musical theater. - Spidra Webster

Tim Curry. Anthony Stewart Head. - Spidra Webster

Hugh Laurie is a MASSIVELY talented musician and actor. - Spidra Webster

His bandmates in Band From TV are variable in their talent as actors & musicians, but they are all actors who also make music. - Spidra Webster

Gregg Henry is one of my favorite character actors and apparently he's a pretty good musician, too. - Spidra Webster

John Lurie. And of course David Bowie who is great at anything:) - Citronella

I suck at both acting and playing music. So there! - Morgan

Felicia Day, who is also an accomplished violinist and a pretty good singer. - Spidra Webster

Madonna's acting worked well for Evita. I dont know about other movies. - Bruce Lewis

Spidra, I disagree, musical theatre actors should count as quiet often they make the leap between broadway and the silver screen without flaw and stage and screen are very different types of acting. I will add to Kristin Chenoweth some of the greats: Bebe Neuwirth (people will know her from Frasier as Lilith), Bernadette Peters (she should need no introduction), Patti LuPone (the original Evita but you may know her from Driving Miss Daisy - Daisy's daughter(in-law i think), Nathan Lane and of course Antonio Banderas!! - Rachel Lea Fox

Bret Spiner - FFing Enigma

I know they're very different kinds of acting. But I thought the crux of Kol's question was people who are primarily actors who also do music (I fully admit I then listed a lot of musicians that went into acting). Musical theater actors FROM THE BEGINNING are people who do both music and acting. It's part of the job description. (This is not to say they're not talented...I'm just saying it's not as remarkable a mix in a musical theater actor as it is in your garden variety film/TV actor.) - Spidra Webster

Christopher Guest, Michael McKean, Harry Shearer. Dan Ackroyd. - Spidra Webster

David Cassidy. Sean Cassidy. - Spidra Webster

Adam Busch. - Spidra Webster

Flea is pretty rubbish at acting - thankfully he has something else to do with his time! - Vicky

Bruce Willis - Valz 4 Botts

Gary Sinese - Valz 4 Botts

Mandy Patinkin - Rachel Lea Fox from iPhone

Woopie Goldberg (decent singer) - Rachel Lea Fox from iPhone

Spidra, I think the only difference is timing. Some start with one and add the other, some start with both. That said, you will notice I am treating musical theatre as a singing career and not listing anyone who hasn't also appeared on TV or a major motion picture that doesn't involve singing. - Rachel Lea Fox from iPhone

Excellent question. - hollyrae

Jon Bon - DJ Stevie Steve

Christian Kane - The song he had on the Angel soundtrack was really good, and I love him as an actor. - Curdy G

Bruce already mentioned Madonna - I'm not a fan of her music, but there are obviously people who think she's good. She was a decent actress in Dick Tracy and some of the other films she was in. - Curdy G

TOM WAITS!! Ever see "Down By Law"? man. - Brent

Tom Petty - I loved him in the Postman, and I think he does a cool job on King of the Hill - Curdy G

David Hasselhoff. lol - Brent

Meatloaf - April

yes! he was very good in fight club... - Brent

Elvis. - Brent

Sinatra. - Brent

Bing. - Brent

Anthony Stewart Head (he played Rupert Giles on Buffy the Vampire Slayer) That man can sing, too. http://www.artistdirect.com/nad... - April

Johnny Depp - Rachel Lea Fox

Vanessa Paradis - Brent

Absolutly Jack Black - ★ Soner Gönül

Jack White - Brent

Jared Leto - Really good actor and (imo) a great singer/song writer. #30SecondsToMars - Matthew Horton

Ooh, yeah. Can't believe I forgot about Meat Loaf. - Curdy G

Harry Connick, Jr. - Dave Roth

Bing Crosby - Curdy G

Glen Hansard, Markéta Irglová - from 'Once'. - Morgan

Brent Spiner? - MiniMage, enterRUPPted

Eddie Murphy - Rodfather

Keanu Reeves. Bad at both acting and singing. - The original Kevin

me! ;) - Brent

Some of y'all are clearly smoking crack. - Derrick

well, it does say they don't have to be good... - Brent

Steve Martin - Anna Lynn M.

Mos Def - Anna Lynn M.

LOL Brent. - Derrick

Kevin Bacon! - Anna Lynn M.

Ice CUbe! - Anna Lynn M.

Harpo - Brent

Michael C. Hall - Dave Roth