Biography
From Wikipedia, the free encyclopedia John Irwin McGiver (November 5, 1913 – September 9, 1975) was a character actor who made more than a hundred appearances in television and motion pictures over a two-decade span from 1955 to 1975. The owl-faced, portly actor with the mid-Atlantic accent was known for his performances as the religious fanatic Mr. O'Daniel in the film Midnight Cowboy; as the kindly Tiffany's salesman in Breakfast at Tiffany's; and as the ill-fated, but honorable Senator Jordan in the original film version of The Manchurian Candidate. He also appeared on many TV shows and commercials, including a Baggies spot in the 1960s, as well as the first of a popular series of commercials for the American Express charge card ("Do you know me?"). Description above from the Wikipedia article John McGiver, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known For

Breakfast at Tiffany's
Tiffany's Salesman

Midnight Cowboy
Mr. O'Daniel

The Manchurian Candidate
Sen. Thomas Jordan

The Apple Dumpling Gang
Leonard Sharpe

Man's Favorite Sport?
William Cadwalader

Mr. Hobbs Takes a Vacatio...
Martin Turner

Lawman
Sabbath Mayor Sam Bolden

Love in the Afternoon
Monsieur X

The Glass Bottom Boat
Ralph Goodwin

Who's Minding the Store?
Mr. John P. Tuttle