I recently installed StumbleUpon (which is great, once you’ve rated some pages), and while stumbling around the Typorganism ASCII-O-Matic was suggested. This thing is great, it lets you upload a photo (sadly it has to be a 60 x 50 jpg, and the colors get a bit messed up) and then choose text or squares, color or b&w, and then it generates the image in ASCII art. It truely is amazing.
I gave it this picture:
(that’s Buddy Christ, for those of you who can’t tell)
And it gave me this:
It even generates the html for you! 😀