Spazzing back, I found the Google Image Randomizer
and I once built something similar which randomly changes bits (as in binary bits) in the pictures:
Klik
(
azerty,
Tue 11 Jun 2002, 17:08,
archived)
clapclapclap
kicks turners arse methinks
(
doktored,
Tue 11 Jun 2002, 17:10,
archived)