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In page Van Johnson:

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Johnson also guest-starred on Batman as "The Minstrel" in two episodes (39 and 40) in 1966. In the 1970s, he appeared on Here's Lucy, Quincy, M.E., McMillan & Wife and Love, American Style. He played a lead character in the 1976 miniseries Rich Man, Poor Man, and was nominated for a prime time Emmy Award for that role. In the 1980s, he appeared on an episode of Angela Lansbury's Murder, She Wrote along with June Allyson. He also appeared in a special two-part episode of The Love Boat, "The Musical: My Ex-Mom; The Show Must Go On; The Pest, Parts 1 and 2" which aired on February 27, 1982, and co-starred Ann Miller, Ethel Merman, Della Reese, Carol Channing, and Cab Calloway, as the retired showbiz stars related to the cast of the show.