When Peggy is getting her head pushed into the deep fryer, both her arms are completely covered in batter mix. But in shots of her pushing Mike away and screaming, her arm is completely clean.
In the very beginning, uncle Anwar is gunned down outside during the day. In a flashback, it shows uncle Anwar being shot by the police as it happened. In the flashback, it is night time, but Anwar was clearly shot during the daytime; not the night.
When Georgie is getting mad at the wrestling match on TV, a figurine in front of the TV keeps disappearing then reappearing.
Clearly cast shadow of the camera, on the Security Guard in the forest.
A boom is clearly reflected in the glass windows behind the customers, when Mike is selling the Tutman shirts.