cradeg: i made a tool to make coloured ASCII pics, its pretty easy to use, it doesnt used the same method as those,
http://www.finitemonkeys.com/ASCIIPr0n.exe
It will generate MASSIVE files and take a long time to process, if you give it big pictures, and the HTML output has been known to kill Mac-OSX stone dead
I had started working on an movie to ascii last week, but i was going to have to convert them back to images afterwards to display, that site gave me the way in html.