When Alice is standing outside the bedroom talking to Ralph while he gets ready, the shadow of a boom mic can be seen going across the front of Ralph's frozen longjohns.
Watch as Alice takes a call from Trixie upstairs & when she is taking the phone she reaches her hand through where the window panes would be.
Watch for one a Audrey Meadows more frustrating moments when whe gets off track with her dialoge during the rehearsal:
"You've got me so upset from yelling at me Ralph!"
Watch for Jackie's improvising with the ladder at the end of the epsidoe.
Watch through the entire episode as Jackie forgets which side his toothache is on.