This weekend for the ludum dare someone made an implementation of Pong on his C64, in a weird turn of events he had to resort to printing out screenshots of memory dumps, run those through an OCR. But the OCR was buggy and he had to check every byte by hand.

http://www.ludumdare.com/compo/2013/04/29/ponkmortem/#more-2...

Reminded me a bit of this story..