Acting
Jack Harold Paar (May 1, 1918 – January 27, 2004) was an American talk show host, writer, radio and television comedian, and film actor. He was the second host of The Tonight Show from 1957 to 1962. Time magazine's obituary of Paar reported wryly, "His fans would remember him as the fellow who split talk show history into two eras: Before Paar and Below Paar."
From Wikipedia.

Groucho & Cavett
as Self (archive footage)

Sid & Judy
as Self (archive footage)

Public Speaking
as Self (archive footage)

Jack Paar: Smart Television
as Self
Jack Paar: 'As I Was Saying...'
as Self

The Wonderful Wizard of Oz: The Making of a Movie Classic
as Self (archive footage)
Bob Hope's World of Comedy
as Self (archive footage)

Down Among the Sheltering Palms
as Lt. Mike Sloan

Love Nest
as Ed Forbes

Footlight Varieties
as Himself - Host

The Dick Cavett Show
as Self - Guest · 2 ep.

The Merv Griffin Show
as Self · 2 ep.

Startime
as Self – Host · 1 ep.
Tonight Starring Jack Paar
as Host · 304 ep.

The Dinah Shore Chevy Show
as Self · 1 ep.

What's My Line?
as Self · 3 ep.

The Bob Hope Show
as Self · 1 ep.

The Jack Benny Program
as Jack Paar · 1 ep.
Star Time
as Self · 1 ep.

The Ed Sullivan Show
as Self · 7 ep.