Hearing chatter that it might be a actress from right here in South Africa, Tanit Phoenix!!!
From The Director Of The Dark Knight:
INCEPTION
Your Mind Is The Scene Of The Crime

I agree with whoever said Bridget Regan and Taylor Cole.
They're both gorgeous ladies plus they look athletic.
Don't tell me our God isn't an awesome God!!!!!

I think that Sarah Lancaster would be a great Wonder Woman. She is tallish, dark haired, pretty, and has a curvy but athletic physique.

My vote is for Lela from LelaLondon.com because she reminds me of her so much in her youtube videos and shes got a great smile xx

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how has she not been brought up in this post yet?
BRIDGET REGAN.

Lena Headey? Probably not. Maybe someone a little younger and a bit taller.
"Glenn Beck has Nazi Tourette's!"

• Lewis Black

Lena Headey for Wonder Woman?

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I agree with Keri Russell. Imagine her dark haired and longer hair. I could see it.
Cobie Summers has an awesome look and presence to pull off WW. I could also see Olivia Wilde. She could build up some muscle for it though.
I would hope that anyone who plays WW is dedicated enough to put in the work to physically and mentally match the presence I've seen in the animated universe and in print.
I think Keri Russell did it so well in voice-acting, I could imagine her as WW!

Mary Elizabeth Winstead

If Angelina Jolie wasn't already 35, I'd saymaybe. As it is, she would be better as an established Wonder Woman in a
Justice League
movie than as a young Diana who is new to Man's World.
"Glenn Beck has Nazi Tourette's!"

• Lewis Black

What about Angelina Jolie?

Olivia Wilde would be nice and so would Erin Cummings(look at her IMDB page,she also is a good actress in the TV show Spartacus:Blood and Sand)
"Tell me something, my friend.You ever dance with the devil in the pale moonlight? " Batman '89

This may be a tad late..but has anyone considered Olivia Wilde? She's gorgeous, dark hair, strong face. I think she would be perfect for WW.
She's also 26 so that's a good age I believeand she's 5'7 and a half
Thoughts?

She's got potential. Nice eyes.
There are nights when the wolves are silent and only the moon howls. -George Carlin

Carpenter didn't even look right for the role 10 years ago, which is the last time that she would have been youthful enough. Maybe the cougar could play the Cheetah.
The best candidate that I've seen lately is Bridget Regan:
http://www.imdb.com/board/22125623/
.
"You are entitled to your informed opinion. No one is entitled to be ignorant." Harlan Ellison

I never thought that Brooke Shields had the right face for Diana, not even when she starred as
Brenda Starr
in 1989. I didn't realize, though, that she was quite that tall (6 ft.).
"You are entitled to your informed opinion. No one is entitled to be ignorant." Harlan Ellison

Nice to know we have a Buffy/Angel fan in the house.
Although she is too old for the part, Brooke Shields has the height and charisma for the role.
There are nights when the wolves are silent and only the moon howls. -George Carlin

CHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CHARISMA CARPENTERCARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CHARISMA CARPENTERCARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CARPENTERCHARISMA CHARISMA CARPENTERCARPENTER!CHARISMA CHARISMA CHARISMA CHARISMA CHARISMA CARPENTERCARPENTERCARPENTERCARPENTERCARPENTER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
"Aint nobody here but two people in green"

@KCJ506: Well I recommend you watch Spartacus:Blood and Sand(which plays on Starz on Saturdays btw), where she plays a character named Sura who is the main character's wife but she appears in flashbacks as well after her character dies.
But if you can judge on appearance look at these pics and tell me what you think:
http://66.147.242.195/~dailyact/wp-content/uploads/2009/08/Erin-Cummin gs1.jpg
http://www.poptower.com/pic-18003/erin-cummings.jpg
http://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ErinCummings0 9TIFF.jpg/200px-ErinCummings09TIFF.jpg
"Tell me something, my friend.You ever dance with the devil in the pale moonlight? " Batman '89

I've never seen her in anything. So I'm afraid I don't have an opinion about her.
Sick of threads "Megan Fox should play this!"

@KCJ506: What do you think of Erin Cummings?,she's a good actress that plays on Spartacus:Blood and Sand and she looks great for the role.
"Tell me something, my friend.You ever dance with the devil in the pale moonlight? " Batman '89

Anyone who thinks Megan Fox would be the best choice for WW cannot be taken seriously.
Sick of threads "Megan Fox should play this!"