Just had a client ask me to create a screensaver from a recent shoot. Any software recommendations?

Can't you use the system screensaver? You can easily use the iPhoto library to create one. If you need a more complex screensaver, then you can program one yourself using Apple developer tools (look also for Quartz Composer). You should be able to find a few examples.

If that doesn't help then go to macupdate.com or versiontracker.com and search for screensaver.

I've been using this one for a few years and it has worked well for both Mac and PCs - the only one that I know of that will create a screensaver for both platforms. A bit pricey until you sell a number of them...http://iscreensaver.com/