Attached Link: http://www.michaelbach.de/ot/

Yes, he's superb, isn't he!! I've been re-visiting that site for a while now, just to see if anything new gets posted.... :-))

BTW - If you like (somewhat more standard) optical illusions, have a gander at the above link. I particularly like the "rotating snake" illusion (In the panel on right, click on 2nd down in LH column..)

Cheers,
Diolma