This is a little late, but I would have thought someone would have already posted it. Anyway, she's in the new Star Trek movie. If anyone has seen the movie, please comment about her role. I haven't seen it yet personally, but she was in a clip on the trailer I saw on TV.

According to IMBD she's playing Winona Kirk.

She is only in the first five minutes of the movie, but she does a nice job. You're right, she is the mother of Kirk, but we only get to see her give birth to him. I'm not usually a science-fiction fan, but I thought this movie was great!