Continuity mistake: Tom opens his right hand to reveal a coin. The next moment he throws the coin, but with his left hand.
Continuity mistake: When Tom Buckley is in his big blue Olds Delta 88, staking out Simon Silver's entourage, his passenger window is rolled down three-fourths of the way so he can spy with binoculars. When he pulls out to tail them, the window is still rolled down. When he peels out to chase them again after almost slamming into the utility truck, the window is now closed, despite the fact that this car has hand cranks (as witnessed a little later in this same scene) and he hadn't had a chance to roll it up. (01:01:30 - 01:02:55)
Continuity mistake: In the bathroom fight scene between Tom Buckley and Simon Silver's henchman, Tom has his head banged off a toilet bowl, causing a huge chunk of it to crack and fall off, but in the next cut it's back in place, although still cracked. (01:32:00)