Anything else like it?
The only other thing that I've seen that could be compared to "Noises Off" is an episode of Cheers called "An Old-Fashioned Wedding". It's the episode which takes places at Kelly's fathers mansion when Woody and Kelly are going to get married (end of season 10).
Everything in that production was spot on with "Noises Off", ie. the introduction of characters, proper entrance/exits at the right time, back story laid out which adds humor to future scenes, etc.
Does anyone else know of anything else like NO or that Cheers episode?