SaverLab
Coolest thing I've found recently. SaverLab is a little, free program that lets you run a Mac OS X screensaver in a window, like an application. For a little over a year now, I've been running a screensaver over the Internet for our parents. They connect with their Mac OS X computers and select our screensaver, it downloads pictures of Aidan to their machines, and when they start their screensavers they get Aidan! When I update pictures, it automatically updates their computers, so they get only the most recent pictures of Aidan.
Very cool.
What SaverLab lets me do is have a window running that shows all those pictures of Aidan. I don't have to put my computer to sleep to see them, I just have to look in the corner. I like it. A lot.