Continuity mistake: When the bobsled team is getting their act together in Calgary, there's a scene of them pushing off with an unpainted bobsled. In the shots of the feet of the guys pushing at the back of the sled, you can see that the lower back of the sled is painted black with green stripes, the colours that they paint the sled in a scene a few minutes later.
Continuity mistake: When Joe, the Heisman candidate quarterback, jumps his Harley off of a dirt cliff, one camera angle is from below as the bike is in the air. The angle clearly shows the bike is different from the Harley he started and finished with. Most noticeable is the fact that the tyres on the stunt bike are knobby enduro tyres, but later when the bike is stopped, you can see the smooth street tyres are back again.