I love optical illusions, and this guy is a master. He has lots of videos on Youtube, here are three favorites.
As it were…
As it were…
The ruminations of topher1kenobe
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Recent tunes
Leaving of Liverpool
Tom and Chris Kastle
3 mins
Rolling Down to Old Maui
Tom and Chris Kastle
8 mins
Johnson Gals
Tom and Chris Kastle
23 hours
General Taylor
Tom and Chris Kastle
23 hours
When I Was a Fair Maid
Tom and Chris Kastle
23 hours
The Nintendo one is by far the most impressive to me. Very Escher-esque.