Mister Ed - Season 4 - Eps 11: Love Thy New Neighbor
Kirkwood officially buys the house next door, which causes Wilbur to go back to his old behavior of when Kirkwood commanded Post in the Air Force. This causes Wilbur to become overly helpful and just a pain in Gordon's neck.
About Mister Ed

Title: Mister Ed
First Air Date: 1961-01-05
Last Air Date: 1966-02-06
Status: Ended
Rating: 6.8/10 (from 47 votes)
Language: EN
Seasons: 7
Total Episodes: 143
Network: CBS Syndication
Genres: Comedy, Family
Production Companies: Filmways Television, The Mister Ed Company
Synopsis
Wilbur Post and his wife Carol move into a beautiful new home. When Wilbur takes a look in his new barn, he finds that the former owner left his horse behind. This horse is no ordinary horse . . . he can talk, but only to Wilbur, which leads to all sorts of misadventures for Wilbur and his trouble-making sidekick Mister Ed.
Cast

Alan Young
Wilbur Post

Connie Hines
Carol Post

Allan Lane
Mister Ed (voice)