I’m not sure if this interview has been posted here before, but I’m fairly certain the answer to that is no. (And if I have, just humor me and read it again.) So I’m sharing it with you all, because it’s just that good.
Jackson had a very short Q&A with Teen magazine for their 12 Days of Twilight special. And he talked about Jasper’s ability, Eclipse (EEEE!!!), the New Moon fight scenes and how during filming for Twilight the “Cullen kids would kind of joke around about how we can take everybody out in the cafeteria in about 15 minutes”:
TEEN: In the movie they never talk about Jasper’s vampire abilities. Why?
Jackson: Well it doesn’t really come out too much in the book. It’s one of those things were it’s understood but in the third book it really comes out like the back story and everything. I think one of the things we didn’t want to get too much into was focusing on all the other vampires. We wanted really to establish this relationship and how she (Bella) gets sucked into the world of the Cullen family and once she’s in the world that’s when things kind of start coming out.
One of the things about Jasper is he doesn’t use the ability all the time. It’s something that he’s very strict about using because it’s like an invasion of privacy to make someone feel something, to manipulate emotions.
PS I know this picture is old, but it’s one of my favorites. Again, just humor me.