This summer Joan will also be seen in The Bourne Ultimatum, trying to rein in Matt Damon's Jason Bourne. It's a bit of change from the lowbudget world of The Upside of Anger, "With smaller, independent films you have to really have your stuff together. You have to be prepared, because there's so little wriggle room in the budget. So I enjoy both kinds of films.
"I really enjoyed being part of Bourne, and working with Paul Greengrass. He's a great man. I have tremendous respect for him. I loved working with him. He's smart. He'll make it work. And it was fun to do a big spy film."