In 1936 Kasznar left Austria for the United States, with
Max Reinhardt's theater company. He appeared in Reinhardt's production of
The Eternal Road, playing the role of Zebulon in the premiere performance July 7, 1937, and performing at least a dozen roles during the three-month Broadway run of the epic production. Kasznar's first major
Broadway appearance was in the 1950 production of
Samuel A. Taylor's play,
The Happy Time. He recreated his role, that of Uncle Louie, for the
1952 film version and earned a
Golden Globe nomination for his performance. Kasznar also appeared on Broadway as the director in
Pirandello's
Six Characters in Search of an Author (1955–1956), and he played Pozzo in the original Broadway production of
Waiting for Godot (1956). (
Archie Goodwin) and Kurt Kasznar (
Nero Wolfe) in the unaired CBS-TV series
Nero Wolfe (1959) While performing on stage in
Noël Coward's
Look After Lulu! in March 1959, Kasznar was also playing detective
Nero Wolfe in what would have been television's first series based on
Rex Stout's characters. Co-starring
William Shatner as
Archie Goodwin and initially slated to air on CBS in September 1959, in
Land of the Giants, circa 1969 Kasznar created the role of Max Detweiler in the original Broadway production of
The Sound of Music (1959–1963), for which he received a
Tony Award nomination. "When that musical had marked its 1,000th performance, Mr. Kasznar was the only actor who had never missed a show," reported
The New York Times. In 1978 he played Mansky in
Molnár's ''
The Play's the Thing with "enormous authority," wrote New York Times'' critic
Mel Gussow. "It is the kind of character he has played often, and consummately, on stage and in films." Kasznar appeared in more than 80 films and television shows, and had a regular role in the
Irwin Allen science fiction television series
Land of the Giants as Alexander Fitzhugh. His
feature films included
Lili,
Kiss Me Kate,
The Last Time I Saw Paris,
My Sister Eileen,
A Farewell to Arms and
55 Days at Peking. == Private life ==