The effect you can see above is kinda cool! It uses a classic demoscene fire effect, and combines it with scrolling bitmaps. The letters had been ripped from the classic VGA DOS font. Another thing it does is show black and white images, unfortunately I don't have that particular image currently as part of the demo.
The code was wrapped in a jQuery widget, so you can initialise on any canvas element.
This was originally part of the Shoutz0r project.