Johnny Carson and Ed McMahon on "The Tonight Show"

(Original Caption) 5/2/1979-Hollywood, CA: Promising never to "dog" the show, Johnny Carson told his TV audience that he will stay on as host of his late night program all of this year, possibly in to next year and maybe for the two years remaining on his contract with NBC, "Originally, I had intended to leave at the end of our 17th year," Carson saidin comments shortly after the show taping began. Ed McMahon is at left.