If rooting through old archived Web stuff isn't quite your cup of tea, here's a nifty, distilled list of some interesting bits:

The wonders of over-JPEG'ing.
Some textures.
A 283-byte JPEG. Oooooh.
Bill the Cat.
Funky fractal.
Don't ask me.
A bad JPEG.
I don't know.
Aardy's Image Lecture, an introduction to basic graphical file formats. It made the rounds on Usenet a few years back.

That's all for now.