Character mistake: Will Ferrell is talked into shooting his gun at the ceiling. Keaton comes from his office and takes his gun and gives him a wooden one. When he takes the real gun, he unloads the magazine from the gun but fails to remove the round in the chamber. He's a cop, he should know how to safely handle a gun.
The Other Guys (2010)
1 character mistake - chronological order
Directed by: Adam McKay
Starring: Samuel L. Jackson, Mark Wahlberg, Dwayne Johnson, Will Ferrell, Michael Keaton, Eva Mendes, Derek Jeter
Factual error: After the stationary 3D scene of the wild night drinking. There is a city skyline scene. The film is set in New York and the skyline scene is actually of Boston. Check the buildings from the right hand side. Recognisable ones you see in order:- The I.M. Pei Building. (with the arch on it.) The Prudential Building. The new John Hancock Building and then just at the base of it, to the left and partially obscured, the distinctive original John Hancock Building.
P.K. Highsmith: Did someone call 9-1-holy shit!
Trivia: Make sure to stay after the ending credits to see Will Ferrell and Mark Wahlberg in a restaurant being quite comical.