Backstage before the final trick, when Allyson is trying to convince Danny to take the ring off, Danny's lip movements do not match the audio when he ends the conversation by saying, "I won't do it."
Right before the last task begins, you can hear one of the other contestants yelling: "I go on in five minutes and nothing is ready! Wardrobe malfunction!" After Danny and Alison are done talking, if you look in the background, you can see the contestant in the mirror. You then hear the same line in the background, only the contestant's mouth movements do not match up.
During the second task, Zoey Cunningham was lifting the ball on top of the cloth when she turns you can see the string that holds up the ball.
When they are in the bus when Danny first arrives to the mansion, he does a card trick where he throws the deck at the window. When Brandon takes the card off the other side, you can see the tape.
During the first challenge, Danny gets points deducted from his score, because he uses snow, which is not one of the five allowed items. However, his opponent uses a wheel and receives 10 points. Not very consistent.