When Kyle is fighting the cop at the party and he steals the baton, he drops it on the ground and stares down the cop. The cop never bends down to pick the baton up, but when he walks away it is in his hand.
In the dinner scene near the end, Josh pours himself the same drink twice.
When Josh pours Kyle some juice at the end, the level of the drink changes between shots.
Kyle throws up due to the beer. Yet when the kids run when the cops show up, the sick is gone.
When Kyle's eating a blueberry muffin, the muffin is whole every time he takes a bite from it.
Two of the doctors perpetuate a variation of the myth that humans only use 10% of their brains, saying that most humans only use 7% (and that Albert Einstein used 9%), while Kyle's entire brain was "inexplicably" active on tests.