She'll be in "Shopgirl" this october.
She was in "Stage Beauty" and "It's All About Love" towards the end of '04, but both were in limited release so if you live in certain places they were difficult to find, but they were both quite good (though very diffrent) so I'd reccomend looking for them on DVD or video.
"Shopgirl" is supposed to be in wide release I think so it should be playing everywhere. I would also reccomend reading the book it's based on. It was written by Steve martin and is quite good- it's funny and sad at the same time.