Factual error: When Mike is waiting in the parking garage with Sobchak for Pryce to arrive, the AT&T logo is prominently displayed on an office building in the background. This logo is the new style introduced in late 2005 and didn't exist in 2002 when the show is set. (00:11:25)
Continuity mistake: In the parking garage, the guy to Mike's right starts talking about the blood of some ethnics running hotter. When he says it's physiology, Mike is looking straight ahead. The camera then cuts to a wide angle showing all 3 guys and now Mike is looking off to his left.
Answer: It might be the Panavision cap he wore when directing his terrible commercials.