Continuity mistake: After Jack brings the puppy over to the girls, the box he brought the puppy in was placed on the back end of their couch. At one point, it is knocked over, and you can see it falling down to the floor (past Janet). In a few shots, it's back on the table, and none of the characters were in a position to pick it up to place it back there.
Continuity mistake: In the episode Bert and Danny are helping Jody move a couch into his new apartment. They take a break and Danny hands Bert a beer. Danny opens the beer while Bert is holding it and it sprays over the front of Bert's coveralls. A second later, in the next shot, the beer spray is gone.Randy DeShong