Continuity mistake: When Paris was on the phone to Janet in the Gas Station (the episode where they work at the gas station and meet "Chops" and co) it cuts to a shot of the fat boy standing next to the same phone and the receiver is put down. It then cuts back to Paris using the phone.
Episode #1.2 - S1-E2
Continuity mistake: When they are playing The Battle of the Sexes, Matt is shown wearing his penalty clothes in one shot before his turn comes up. His clothes are normal in the next shot, and after that is when he loses on his turn and puts on the penalty clothes.