On the dvd's they use the uncut version of the opening theme song, on the season 3 uncut opening theme when they are showing clips from season 2 episodes, I've identified all but one clip, which episode features jack leaning on the wall, but missing and falling into the bathroom?

It might be "Ground rules" but I'm not sure.

It's Chrissy's Date.....the one where she has a date with Lloyd Cross only to find out he's married. The particular part you are talking about is after Jack took her to meet Lloyd's wife. They had come home and Jack told her that she was lucky she found out because if she had married him her name would be Chrissy Cross.:lol: