Thanks to Matt at 1000 Markets for suggesting animoto as a fun promotional tool! Animoto is a small, very user-friendly service that takes your still photos and turns them into a little video montage, complete with soundtrack. It's very easy to create a 30 second video (and for a small fee, of course, you can upgrade the image quality).
I imagine I'll spend a lot of time this weekend uploading photos of my kids doing goofy things. Wait until they can see themselves on film.