I’ve been playing with Picasa this weekend. There’s a new version that just came out and the new feature is something called Face Movie. Here’s a quick example that I put together in about 5 minutes:

What it does is to use the face detection functionality that was added previously, and to put together a movie where the selected person’s face doesn’t move (but the movie scrolls through all the pictures that the face is in). It’s very impressive (and fun) to use!