Continuity mistake: At the "Big Pipe" contest the star gets trapped under water when her leash gets caught on some rocks. You see her undo the velcro on her ankle and then abandon the board (with the leash attached). About 20 seconds later when she is diving below the oncoming waves you can clearly see the leash re-attached to her ankle.
Continuity mistake: On the double date when Juwanna goes to the bathroom and kicks off the shoes, one lands on each side of the toilet. The next scene shows them side by side.
Continuity mistake: When the Horsemen team are ready to play the start to skate up to the arena. You see a back view and Jonathan clearly doesn't have his white T-Shirt over his black suit. They cut to someone else then back to the team and Jonathan clearly has his white shirt on.
Continuity mistake: When Ox throws MJ's shoes onto the wire, there is no tree beneath the wire where the shoes fall, but when Calvin climbs onto the tree, there is clearly a branch underneath the shoes.
Continuity mistake: When the Owls are playing for their district championship, the other team's best batter comes up in the last inning. As he is walking to the plate, he is wearing Nike shoes, but when he digs into the batter's box, his shoes are Reebok.
Visible crew/equipment: When Ted is sliding down the hill after being chased by a bear, you can see a plastic sled on his back.
Other mistake: In the Super Bowl, both end zones are painted with the Vikings logo (you can see the far end zone as they go to kick the game winning field goal). One end zone should bear the Bills' logo.
Factual error: When the upset boyfriend ends up driving off the cliff, his car explodes into flames magically and the fire doesn't even start at the engine. The entire interior of the car is consumed and when the car crashes, its explosion is on par with a missile. The character, when seen next, doesn't have a burn on him at all ignoring the fact that there was no humanely possible way to survive that fall and explosion.
Continuity mistake: About 35-40 minutes into the film, Jules and Jess are at the bus stop. Pinky's future in-laws drive by in the Jaguar with nothing in front of them. When the camera shot moves back as they enter the bend, another car has appeared in front of them.
Continuity mistake: When Mercker are in the boxing ring you see him put his walkie talkie in his belt. Then it cuts to a new shot and he puts it in his belt again. (01:03:50)
Continuity mistake: When the team has their first game against the old guys, the first shot by the lead is wrong. Watch carefully and you will notice that the direction of the rotation of the stones changes about three times from clockwise to counter-clockwise during the same shot.