Factual error: When Chris Rock plays chess on the street on a chess park table, you can see that the right square on the board is black. Any chess player knows that a board must be set up white on right. Something that makes this mistake even bigger is that Chris Rock is playing chess on a downtown chess table, not a personal board. Meaning the whole table was made wrong by the architect, no way would a city let that kind of error continue. You can also notice that the table Anthony Hopkins is playing on was constructed properly.
Continuity mistake: Near the end of the movie where the bad guys are chasing Hopkins and Rock in the field, one of the bad guys lands on the hood of the Mercedes. He rips of the driver's mirror and uses it to smash the windshield. In later scenes the windshield is whole again.
Other mistake: When Chris Rock is DJ'ing at the club he uses the slider on the turntable to increase the volume of the love song he's just started playing. The slider on the turntable has nothing to do with volume it is a pitch control used for controlling the speed of the turning disc. Even if he were controlling the volume with his left hand (out of shot), changing the pitch control to the extent that he did, would cause the record to sound terrible.