When Frank enters the room and sits down next to sleeping Vic, he grabs her left leg and shakes it, but in the following shot, he drops her right leg.
When Frank and Tonny are in the drugstore to buy vitamins (just before the drug-deal with the Swede), the cameraman is reflected in a mirror.
When Frank and Tony are in Frank's car, they pass a crossing just before Frank's phone rings. 20 seconds later, when Frank finishes his phone call, they turn right, at the same crossing they just passed.