Continuity mistake: After Joe picks his daughter up from her mother's, they drive into Minneapolis. While Joe is talking to his daughter, you can see Macaroni Grill and Galyns out the window as they drive past. After a quick shot of the daughter, when the camera is back on Joe, if you look out the car window again, they are passing the same establishments.
Other mistake: In the scene where Joe is playing squash with 3 other office excutives he hits the ball so hard it leaves the court and hits a clock on the wall behind them. When the clock falls you can clearly see the glass case below start to break before the wall clock even falls onto the glass.