I’m having a great time making these movies on Animoto. The site is still in beta (can’t upload to YouTube yet, or download to desktop) but I am really looking forward to seeing what it can become. Definitely check their blog and try a video of your own. I pull my resource files directly from my Flickr account. If uploading pictures from your desktop, you’ll want to resize images to 1024 x 768. I use DroPic! to do this incredibly quickly, although pc users may want VSO‘s image resizer (both are free).