Fantastic Flame Screensaver
This nifty screensaver sets your desktop ablaze. When you fire up Fantastic Flame Screensaver (no pun intended), each item on your desktop - including icons and all open windows - will appear to catch on fire, glowing and emitting a smoke effect. Also, plenty of backgrounds (zodiac signs, some... The feature-packed, well-organized Preferences window lets you alter the flame palette, speed, spires length and flame intensity, change the wind direction, and choose how quickly the flames fade out on exit.
http://www.laconicsoftware.com/fantasticflame/fantasticflame.exe - 4Mb - Download - Screenshot