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
Recent tunes
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King's X
4 daysAmerican Cheese (Jerry's Pianto)
King's X
4 daysFathers
King's X
4 daysRun
King's X
4 daysLies in the Sand (The Ballad Of...)
King's X
4 days
The Nintendo one is by far the most impressive to me. Very Escher-esque.