Make your own screensavers from photographs and so on, complete with transition effects.
http://www.2flyer.com/
2Flyer Screensaver Builder 2.1 (Last Freeware Version)
Download 2Flyer_Screensaver_2-1.zip
A screen saver for displaying JPG, PNG and BMP images with a few options that make it a bit more interesting.
http://www.goat1000.com/jpegsaver.php
Download.
http://www.goat1000.com/downloads.php