On television , Mackenzie made guest appearances in Route 66 , ABC Stage 67 , That Girl , The Mod Squad , Rhoda , Baretta , and All in the Family .
Mackenzie had a recurring role in The Bob Newhart Show .
On television , Mackenzie made guest appearances in Route 66 , ABC Stage 67 , That Girl , The Mod Squad , Rhoda , Baretta , and All in the Family , and he had a recurring role in The Bob Newhart Show .