Visible crew/equipment: While Barnum and Phillip sing "The Other Side" Phillip uses two stools to get up and down from the bar top. When he steps down from the bar top, in this wideshot (also the first shot of them in the pub and other shots) the two upright stools Phillip used are secured with additional support, note the floor area underneath the stools' legs have the same pattern as the rest of the floor, though we can see the outline where the pattern's lines don't match up. Additionally, we also see three actors' marks (in the shape of an "L") on the floor in front of the bar, which will be where Barnum and Phillip will stand when they agree on the ten percent. (00:36:05)
Continuity mistake: When Tommy comes to pick up Greg on the street where Greg was playing with some kids, Greg goes to get in Tommy's car. As he walks around it, a kid with a burgundy striped shirt is standing by the car with the football, but as he's getting in in the next shot the kid changes to the green shirt kid holding the football. During this part of the scene, the kid by the car changes back and forth between the green shirt and the burgundy stripe shirt kid several times. (00:06:10)
Factual error: In a picture from the UN headquarters in New York in the year 2003 you see two German flags. The German Democrativ Republic hasn't existed since 1990. (01:16:04)