Continuity mistake: When Patrick Swazee's brother is in the van and is being chased by the guys trying to steal the van, the guys place a blue light on the roof of the car. The first shot of the car the light is on the passenger side. In all the rest of the shots, the light is on the driver's side of the car.
Continuity mistake: When Liam Neeson shoots up the mobs place of business, he shoots the water cooler and you hear the plastic jug bounce around on the floor. When he leaves the scene cuts to his brothers killer knocking the jug off the top of the cooler-when it was just bouncing around on the floor?