Over the course of the series, the phrase, "Hi, Bob" was said 256 times. Howard Borden (Bill Daily) said it a total of 118 times. Dr. Jerry Robinson (Peter Bonerz) logged 41, Carol Kester (Marcia Wallace) 36 and Emily Hartley (Suzanne Pleshette) 17 times. Ellen Hartley (Pat Finley) said it 5 times, other minor characters or guest stars said it 38 times, and Bob Hartley (Bob Newhart) even said it once himself.
The "Sam and Janet Evening" joke would resurface in the Newhart episode "The Visitors"; in which friends of Dick and Joanna Louden named Sam and Janet would habitually use it to announce themselves.
The episode features Morgan Fairchild in what may be her first-ever television guest appearance.
In this episode the Hartleys are celebrating their 10th anniversary, but they just celebrated their seventh anniversary in the previous season's "Taxation Without Celebration".