When Dom and Lestor are discussing business by the canal, a predominantly yellow barge suddenly appears, moored, just behind them, then - as Lestor jogs off - it's gone.
After Lestor rejects Dom's proposition during the jog along the canal, he is seen walking away and putting his earphones back in. But in the very next scene, his earphones are out again.
When they fly in slow motion (the car accident) the prosthetic hand leaves the screen from the right side and after a couple of frames it enters the screen from the left side.