Continuity mistake: When George and Sherm are in line getting coffee, there's only one person in front of them. When the shot changes, there are now 3 people in front of them for the scene. When George turns to look at his boss, it's back to one person in front and when he turns back, there's 2 people.
Continuity mistake: George is on the phone with his wife when he gets hit by the taxi; as he crosses the street there are 2 taxis at the light, when the camera angle changes and he's on the hood of the 2nd taxi, we never see the 1st taxi drive forward. When the camera angle changes back, the 1st taxi is now a blue car.