The original Broadway production of Neil Simon's "Laughter on the 23rd Floor" opened at the Richard Rodgers Theater on 22nd November 1993 and ran for 320 performances until 27th August 1994. Nathan Lane and Mark Linn-Baker reprised their stage roles in this televised movie. The play opened in London's West End on 3rd October 1996 and ran for five months. It starred Gene Wilder. The play's setting is described in its intro as; "An office on the 23rd floor of a building on 57th Street, New York City. 1953". The play was Simon's 28th written stage production.
The number 23 was chosen as the floor level in the title for the source play because, according to Neil Simon, script sessions for the original 1950s Your Show of Shows (1950) were held either on the 11th or 12th floor of the NBC-TV building. Add them together and one gets 23.