I'm accepting more and more of them, but then I think about certain things and they go right back into the don't like column.

Mainly I don't like Kristen Stewart as Bella, not that I don't like Kristen Stewart, it's just she doesn't fit into the persona of Bella, and her voice doesn't suit her at all.

I also didn't like Mike at all, because I'd remembered him too much as the geeky brother from Joan of Arcadia, but I've come to like him more.

James is PERFECT. He's the only one I like...

Not a huge fan of the casting of Bella. I really like the casting of Edward, Jacob, James, Angela. Hmm. The rest are in the middle.

what about all the cullens?

Answering your question; What do I think about the Cullen casting?
I'll tell you what I think. lol
1. I think Edward could've been better cast, but Rob will do.
2. I like Ashley Greene with the short hair, but I think they should've gone shorter and more spiky/pixie-like. Other than that, I think she has the right facial features.
3. I LOVE Kellan Lutz as Emmett. I think he fits his role almost PERFECTLY.
4. I think that they could've found a more Rosalie-y Rosalie. haha.
Maybe an actress who could pull off the blonde better (or they could have at least done a better job of dying Nikki's hair).
5. I hate Jackson Rathbone's hair. It's so NOT good. I think that's all I have to say about him.
6. Carlisle, I like. He might look a bit too old to be passing for someone who's visually 23. But aside from that, I say again, I like.
7. Elizabeth Reaser will be fine I guess. Esme's description never really stuck with me throughout the series, but Elizabeth does have that motherly look to her.

And, I guess I must stop there, because I'm answering for the Cullens. :)

EDIT: Oh well, I'm going to tell you what I think about a few others too! hehe..
So as I've said multiple times before, I don't really like Kristen as Bella, her voice is too manly and smoker-ish for me. I have my fingers crossed that she'll do well though.
For me, I always saw Charlie as somewhat more of a John C Reilly.. Not John C Reilly exactly, but someone close to him. I always thought that Charlie was supposed to have curly hair. I mean, it doesn't matter that much, he's not a huge character or anything, so I'll continue.
I like Jacob's casting, and I think that Taylor will do really well (I really dislike his wig though.. maybe if it wasn't so center-parted? Idk, I personally think that makes his head look different).
I like the casting for James, Cam is a very attractive human being (which is funny, because he's not playing a human *snicker*).
Victoria on the other hand; she's alright, but I think her hair is too dull to be the vibrant and brilliant flame that it's described as.
I really don't have any thoughts on Laurent.
I think that Jessica's hair should be darker and curlier. That's about it.
I like Angela, I like Mike, and even though I've already gone through most of the characters, I don't want to finish. This is where I'm going to stop now.

OH WAIT, did anyone else notice that I had a lot of comments/concerns/complaints about HAIR? I thought that was kinda funny. It was totally unintentional, I swear.

wow kate.

there's only two i was not sure.. Rosalie at first but now i like her, and the one who plays Laurent.

I really, really have my doubt about Taylor as Jake. He just doesn't fit the picture in my head. Same goes for the actor of Charlie.

I LOVE Kristen and Robert and Ashley.
the only two i'm reallllllllyy iffy about is nikki reed and elizabeth reaser...def not how I saw Rosalie and Esme

Everyone fits. :) I don't like strong critisism, coz they're not gonna change it now!

They fit the characters. When I was reading the twilight book, they kind of looked like the people imagined them to be. Although, some were different then I excpected.

I'm absolutly agree with timbitzk. her thoughts are absolutly that what I think!!

Kristen Stewart is okay for Bella. but i think they could of got a better person to play Edward. They got the perfect guy for Emmett and for James. The guy who plays Jasper, yea I don't like his hair at all!! and the rest are good. oh except for mike they should of got another person to play him.

I've accepted all of them in any case.
Cam is too hot for james though..he actually makes me like the character :D

i like them all

I love them all....and i think that they fit to their characters=)

. Edward should be hotter.
. Bella should be less pretty-compliment to Kristen :)
. Jasper should look more friendly.
. Emmett - yes
. Rosalie - yes
. Carlisle - yes
. Esme - yes
. Jacob - yes
. all of the pack (sam, jared, paul, quil, embry, leah, seth, collin, brady) - yes.

well iam not so happy about the new Victoria and i also dont like Alec so much