Whoa - is it just me or does that sign in his left hand (the one with the concentric tye-dye circles) kind of pulsate/distort itself when you stare at it? (it also might have something to do with having done acid... I get this kind of thing sometimes. If you've never done hallucinogens mention that too)
I bet Bridgit Riley would want to have a com. when she started op-art during the sixtees. That thing on the right attacks my eyes.