The Lucy Show Lucy Dates Dean Martin Part 5 of 5

S4E21, first aired Feb 14 1966.
In which Lucy's good pal Dean Martin makes an appearance.
Lucy dates Dean Martin's stunt double, cunningly played by Dean himself, and hijinks ensue with many good-natured jibes at Dean's expense.
This was reportedly Lucy's favorite episode of the show, and she returned the favor by appearing on the Dean Martin Comedy Hour and being a "victim" of his celebrity roasts.