Good Neighbor Sam

Good Neighbor Sam is a 1964 American Eastman Color comedy film cowritten and directed by David Swift and starring Jack Lemmon, Romy Schneider, Dorothy Provine and Michael Connors.

Lemmon plays Sam Bissel, a hardworking San Francisco advertising executive, with two young daughters and a loving wife, Min Dorothy Provine.An extremely important client, Simon Nurdlinger Edward G. Robinson, is considering taking his business elsewhere when he believes there are no family men working at Sams company. Sams boss, Mr. Burke Edward Andrews, introduces the client to Sam. The client is delighted by Sam and agrees to do business with him and the company. Sam feels his career is now on the way up and he goes home to celebrate with his wife. There, he meets his wifes longtime friend and their new nextdoor neighbor, Janet Romy Schneider, and they all have dinner together to celebrate his promotion and Janets new home. Sam gets drunk and tumbles down the grand carpeted staircase of the Fairmont Hotel, knocking down a waiter carrying trays of meals. ........

Source: Wikipedia