A GUIDE FOR THE MARRIED MAN …. 1967
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(Technical Adviser – Mountain Climber) Jeff has a cameo role in this comedy about a married man (Walter Matthau) led astray by a friend (Robert Morse).  The comedy co-starred Inger Stevens, with Lucille Ball, Jack Benny as well as Jeff and many others in cameos.  Jeff's cameo only lasts for a few seconds, and consists of one line:  "Because she's there."