'm trying to figure out which episode this is. I only remember this one part.
Someone unexpectedly arrives and walks in the apartment and Jack doesn't have time to hide so he grabs the lampshade off of the tall lamp near the door and puts it on his head and stands there really still, pretending to be a lamp! haha, I love it! but I can't find it. I tried searching the forums. Does anyone know?!

It is "And Mother Makes Four" in Season 1, when Chrissy's mom comes to visit and they are trying to hide Jack from her. I just watched it, it is great.

oh! thank you so much. This makes me very happy. Much appreciated :)