Plot hole: At the end of the episode, Joey takes a taxi from Boston to Eddie's house in Worcestor. As she walks up to the front door, the cab leaves. Eddie has no idea Joey is coming, and she has no way to return to Boston without using a cab or asking Eddie for a ride. But she doesn't even know yet if Eddie is home, and whether he would offer to drive her home. Seems illogical for Joey to dismiss the cab without asking the cab driver to wait a few moments while she sees if Eddie is home, and if he would be willing to drive her back to Boston. Otherwise, she would have to ask his parents to use the phone to call another cab.
Continuity mistake: When Jen is talking to Grams and pours herself a glass of juice the fridge behind her is open. The camera cuts to Grams for a few seconds and when it cuts back the fridge is closed and the jug of juice has disappeared. While the camera does go off Jen for a few seconds, it was nowhere near long enough to put the juice back in the fridge and close it, then run back to where she was standing. Plus, there's no sound of the fridge door closing.