Alan Alda Capt. Benjamin Franklin "Hawkeye" Pierce Actor Harry Morgan Col. Sherman Potter Actor David Ogden Stiers Maj. Charles Emerson Winchester III Actor Mike Farrell Capt. B.J. Hunnicut Actor Gary Burghoff Cpl. Walter "Radar" O'Reilly Actor Loretta Swit Maj. Margaret Houlihan Actor Jamie Farr Cpl. Maxwell Klinger Actor William Christopher Father Francis Mulcahy Actor Frances Fong Rosie Guest Star Patricia Stevens Lt. Baker, RN Guest Star Robin Roker Nurse Perry Guest Star Larry Gilman G.I. 1 Guest Star Michael Talbott G.I. 2 Guest Star Roy Goldman Roy Goldman Guest Star