In what kind of M*A*S*H scenes could the laugh track be omitted by agreement with CBS?

The laugh track could be omitted from M*A*S*H operating room scenes by agreement with CBS.

Series creators Larry Gelbart and Gene Reynolds wanted M*A*S*H to air without canned laughter, arguing that a filmed drama set in a Korean War surgical hospital should not sound as if an audience were watching from the studio. CBS rejected a completely laugh-free broadcast, but accepted a compromise allowing the producers to leave laughter out of operating-room sequences.

The policy reflected the tone of the surgery scenes, where characters treated severe battlefield injuries rather than delivering conventional sitcom jokes. Several episodes went further and omitted the laugh track entirely, including “O.R.,” “The Interview,” “Point of View,” “Dreams,” and the series finale, “Goodbye, Farewell and Amen.” Later seasons used a quieter laugh track as the program became more dramatic, and DVD releases offered versions with or without it. A common mix-up is to assume CBS allowed laughter to be removed from all serious scenes; the original agreement specifically concerned operating-room scenes, although later episodes and broadcasts sometimes went beyond that.