Long before streaming made every old episode available at once, television depended on a dependable circle of character actors. A familiar performer might play a waiter one season, return as a doctor the next, and eventually settle into the role audiences remembered for decades. Fans were not expected to compare screenshots or search cast lists during the commercial break. Most episodes aired once, entered reruns in no particular order, and were watched on television sets that did not always reveal every familiar face clearly. Producers also had practical reasons for inviting people back. An actor who knew the studio routine, delivered the dialogue cleanly, and understood a programme’s rhythm was safer than an unknown performer. Sometimes the return amounted to a quick inside joke. On other occasions, a one-night guest became an essential cast member without anyone explaining why the new detective looked exactly like last year’s suspect. These curious double duties offer more than trivia. They show how television was built one episode at a time, often with yesterday’s guest star standing just outside the door.
#1: Harry Morgan Before Colonel Potter on MASH (1972)
Major General Bartford Hamilton Steele wants the hospital moved closer to the fighting, mistakes Klinger for someone named Marjorie, and breaks into song during Hawkeye’s hearing. Harry Morgan played the unpredictable officer in “The General Flipped at Dawn,” the third-season premiere broadcast in 1974. One season after Henry Blake’s departure, however, Morgan returned in “Change of Command” as the 4077th’s new colonel.
