Not that anyone asked, but here's what I think anyway.
Sandra Bullock: She just couldn't pull off the role convincingly. Not big or exotic enough.
Karen Cliche: I like her as a candidate for Catwoman, and she doesn't have that regal bearing that's so important.
Jordan Bayne: I could live with it, but she doesn't strike me as the perfect candidate.
Lucy Lawless: She certainly is convincing as a warrior, but I've never found her feminine enough for the role.
Sarah Michelle Gellar: Way too small, and non-Greek looking.
Julia Roberts: I think the reasons why not are pretty clear.
Michelle Rodriguez: Too short, and not the right personality for Diana.
Kristanna Loken: An interesting choice. She's beautiful, exotic, tall, fit, imposing, and feminine. But I think she'd really shine as Artemis.
Demi Moore: Too cold in personality, she'd make a better villian, like Circe. Although I always thought she'd make a GREAT Poison Ivy, too.
Joelene Blalock: She's Greek, got a great body, and is beautiful, but I've never seen her in action, and she strikes me as also kind of cold.
Jennifer Garner: I like her much better as Elektra.
My picks are this:
Wonder Woman: Early 20's to Early 30's: Jennifer Connelley - If she put on some more muscle, she'd be perfect for a young Diana. She's elegant, refined, intelligent, reasonably tall, raven-haired, beautiful, and when she talks, people pay attention.
Wonder Woman: Early 30's to 40's: Monica Belluci - My favorite choice for a more experienced Diana. Incredibly beautiful, Mediterranean-born, statuesque, sexy, intimidating, compassionate, and looks like she could go toe-to-toe with Superman.
Anyway, that's just what I think, but I like my choices.
