As soon as Cindy was about to enter the apartment for the first time, a coin fell on the floor, and Jack was on the ground and went over to the door to look for it. As soon as Cindy walked to the door step, watch how John overacted when he seen Cindy at the door. I know that was the first time they all met Cindy, but Jack looked at Cindy like he never saw a human before.

Never noticed that. I think he overacts in his drunk scenes.

Guess he was shocked to see someone standing there in the doorway. Why I don't know. Even though it's just a t.v. show, they were all very irresponsible at leaving that door unlocked, or wide opened.

Guess he was shocked to see someone standing there in the doorway. Why I don't know. Even though it's just a t.v. show, they were all very irresponsible at leaving that door unlocked, or wide opened.
I just watched that episode, and he didn't overreact. He just looked surprised to see someone there when he wasn't expecting it.