Michael Sheen, who plays Aro in the New Moon interviewed Ashley Greene (Alice) for Interview Magazine. Sheen has a great sense of humor and the interview is tons of fun. If you aren't following him on twitter, you should: @michaelsheen.
Here's the part about Rob and you can read the rest over at Interview Magazine.
SHEEN: When I was on the set of the Twilight films, I could see that Kristen [Stewart] and Rob [Pattinson] have a lot of clout. They have a lot of power within the franchise now, it seems—and rightfully so. They’re asked their opinion, and for actors who are so young, they seemed to have a lot of say in what was going on. You say that now, with this film, you’re getting to be more involved. Is that something that you relish? Or is that responsibility quite frightening as well?
GREENE: For whatever reason, I relish it. Part of it might be that I did get to work so closely with these people, and see close up how they handle things. But I’m really excited. One of the coolest feelings was when I was reading with people for a part, and this guy came in, and I was just like, That’s the guy. You just know.