Revealing mistake: Towards the end of episode 2.18, "Bye, Bye Birdie", Tim drops to the ground in the back yard while trying to avoid the helicopter. When Tim gets up, you can see the grass (carpet) move and wrinkle up.
Revealing mistake: When Tim is falling, crawling and rolling on the snow-covered ground in the final scene, none of the snow clings to him or his clothing. He does not even get damp, even when he is lying on his back in the same spot for several seconds.
When Randy takes the phone from Mark, as he starts to turn away he lifts the phone to his ear. The angle changes and he is now holding the phone in front of him as he walks over to the magician's box and jumps up on it.