ANSWER
The actor was McLean Stevenson and the show was "Hello, Larry". And of course, the popular show Stevenson left behind was "M*A*S*H". Don't feel too bad if you don't remember "Hello, Larry" - it didn't last very long. Extra credit if you knew McLean was second cousin to Adlai Stevenson, and served as his press secretary for both of his presidential campaigns in the 1950's. McLean Stevenson passed away in 1996.
WHO GOT IT RIGHT: Cindi Lou, Bob Milligan, George Van, Allan Christensen, WH Seagle Jr, and Sunni.