Noises Off is one of the most entertaining and brilliant farces I've ever encountered. Every character has his place, every line has its purpose, every scene creates mayhem and hilarity. The play, separated into three acts, is about a group of actors, a director, and two stagehands trying to put on their very own farcical comedy, but drama and destruction ensue in the funniest of ways, making "Nothing On", the play within a play, a living nightmare for everyone on set.
I've always been exceptionally critical of comedies, especially those that play on life's extremes. I don't laugh when someone gets hit over the head for no reason. I do laugh when Gary goes after Freddie with and ax because he mistakenly thinks the latter has slept with his girl. I don't laugh when someone flubs and does an "oopsie!" I do laugh when all the sudden in the third act Brooke stops and blinks one eye, because I know from the set-up in the first act that that one gesture means she has lost a contact, and with everything else going wrong this is the cherry on top of the chaos cake.
The entire play is a web of cause and effect. It thrills me every time I read it and, even more so, every time I see it. The best part: You almost never know when something has actually gone wrong, since the entire play is things going wrong. It's a sit-back-and-enjoy-the-ride kind of deal.