He was first seen in episode #12, "Stranger in Town," where he was played by actor Walter Baldwin.
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St. Elsewhere, which frequently referenced other television programmes, had a barber named Floyd in the series finale (which also referred to Dr. Kimble's one-armed patient being on the loose, Henry Blake (patient no. 4077) being the victim of a helicopter crash, and a re-enactment of the Mary Tyler Moore’s group-hug & shuffle to the tissues).
Pink Floyd | Lawson | Henry Lawson | Floyd Patterson | Floyd Landis | Lawson (band) | Nigella Lawson | Floyd County, Kentucky | Floyd County | Floyd Red Crow Westerman | Eddie Floyd | Doyle Lawson | Dave Lawson | Keith Floyd | John B. Floyd | Pretty Boy Floyd | Pink Floyd's | Hurricane Floyd | Floyd Gottfredson | Floyd Dell | Carlisle Floyd | Alfred Lawson | Louisa Lawson | Lawson, New South Wales | Floyd Gibbons | Floyd Cramer | Floyd County, Georgia | Floyd | Denis Lawson | Tim Floyd |