I was watching the episode "The Not-So-Great Imposter" on DejaView the other day and saw Janet's head appear above Angelino's shoulder while waiting for her cue to come in. I don't know if anyone noticed before.

I uploaded a video on YouTube: http://www.youtube.com/watch?v=3anLuy-hOvM

yes I noticed that one as well maybe she was trying to get Mr. Roper to barge in there or something first...

With such a big smile on Joyce's face seconds between she walks in with a frustrated look along with Furley? I don't think so.

I took some Acting classes in High school and I did a couple Plays. Sometimes some of us would stand behind the curtains and watch or wait for our cues to come on stage, The one thing I learned form my Acting Teacher was "Make sure the Audience Never see you when you are standing backstage" We has doors that would make a noise also. But she always said when you are waiting for you cue to make sure are not seen. although that is a little different then TV. Joyce was probably waiting for her cue from the Director but didn't realize that she could be seen.

With such a big smile on Joyce's face seconds between she walks in with a frustrated look along with Furley? I don't think so.
Maybe don told a Funny joke before they came on.

This episode aired today on Antenna TV.