I finally got one of those microscopes with a builtin LCD screen and camera. I thought about making my own, but I can never find the time. Here's a picture of a CD, at the lowest magnification. At first I was ecstatic--I thought somehow I was looking at bits! Well, no, I was looking at the soft underbelly of the silkscreened dot pattern, underlit by the lower light source.
Zooming in with higher magnification, you can see much more detail, but still nothing especially interesting. :)