Revealing mistake: When Fogg pulls the knife out of Passportout's buttock you can see that the knife is attached to something under his pants.
Revealing mistake: Early in the movie Samantha is in the rec room watching TV, she briefly watches Jay Leno who is dressed in a brown suit, with a brown & white striped tie. Much later in the movie James is in his room watching TV, and he briefly watches Jay Leno, who is dressed in the same suit and tie. It appears Jay Leno doesn't change his suits often. (00:19:20 - 01:23:05)
Revealing mistake: When little Jack is lying down in his crib in the Byrnes' room, after Jack comes in to rest from the football game, you can easily tell this isn't a real child but just a doll. The hair is wrong and there's no movement, like breathing. (00:55:05)
Revealing mistake: When Miles is driving and doing a crossword puzzle the car's odometer is at 0.
Suggested correction: Already posted and corrected. The odometer isn't working. It's broken. It happens.