He also appeared in other popular shows such as Quincy, M.E., Hawaii Five-O, Matlock and In the Heat of the Night.
It would be another 14 years until Richard would make another television guest star appearance on the TV drama Doctors' Hospital in 1975 as Dr. Williams.
Throughout the 1970s, McKenzie would guest star in such shows as The Waltons, Hawaii Five-O, The Jeffersons, Roots, Sword of Justice, One Day at a Time, etc.
The series was about a couple, Sam and Molly Quinn who are too focused on their jobs to pay attention to their children or each other.
[2][3] Some other of his memorable guest star roles in the 1980s include those in the shows Soap, CBS Afternoon Playhouse, Archie Bunker's Place, Knots Landing, Benson, Growing Pains, Too Close for Comfort, Matlock, ALF, etc.
In the 1990s, McKenzie would guest star on shows such as The Golden Girls, The Fresh Prince of Bel-Air, NYPD Blue, In the Heat of the Night, etc.