What TV game show announcer was famous for shouting "Come on down" on "The Price Is Right" (NBC, 1956-65; CBS, 1972–)?

Johnny Olson was the famous TV game show announcer shouting “Come on down” on “The Price Is Right” (NBC, 1956-65; CBS, 1972).

Olson worked on the show from 1972 until his death in 1985.

How long did the TV show “Queen for a Day” run on television? "Queen for a Day" ran from 1955-59 on NBC and from 1959-64 on ABC.
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Did “The $64,000 Question” (CBS, 1955-58) cost more than $64,000 to produce each week? The TV game show "The $64,000 Question" (CBS, 1955-58) cost only a small fraction of that to produce each week, about $15,000 per weekly episode. This was much cheaper than another top-rated half-hour…
How long was Jack Parr host of “The Tonight Show” (NBC, 1957)? Jack Parr, the host of the late-night show "The Tonight Show" began his run on NBC July 29, 1957, and ended it March 30, 1962. He followed Steve Allen, who hosted the show…