When Buster goes on his soccer rampage the first clip shows him putting down the ball and running (presumably with the ball). In this you can clearly see the soccer ball on the ground behind him and him running away from it. In the next shot he is shown kicking the ball again.
One of the police officers makes reference to having daughters who seem to have run off somewhere. In the next season, the same officers are a couple and hire Maggie (Julia Louis-Dreyfus) to be a surrogate mother so they can finally have children. Their next appearance completely disregards the fact that they already have kids.
In the "On the next" segment, Tobias is shown shooting his supervisor's revolver at mice on the floor. Muzzle flashes and the gunshot sound effects were added in post production as he mimed firing the gun during filming. There are four instances of him firing the weapon on screen, but only the first three have the muzzle flash. The fourth has only the sound effect.
When Michael is called to go to his mother's to act as her husband when going to Annyong's soccer game, he walks into the kitchen after talking to Annyong where a boom mic operator can be seen in the corner. (6:02 - time in episode)