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Big Mac is the twenty-first episode of the third season of M*A*S*H, and the sixty-ninth episode overall.
Starring: Alan Alda (Capt. Benjamin Franklin "Hawkeye" Pierce), Wayne Rogers (Capt. "Trapper John" McIntyre), McLean Stevenson (Lt. Col. Henry Blake), Loretta Swit (Major Margaret "Hot Lips" Houlihan), Larry Linville (Major Frank Burns), Gary Burghoff (Cpl. Walter "Radar" O'Reilly)
and Loudon Wainwright, III (Capt. Spalding)