It's the classic-television edition so far...
1. Harvey Korman (that's Hedley!), the gold standard for comedians who laughed at their colleagues' work and, in doing so, let us in on the joke
2. Earle Hagen, who gave us the Andy Griffith Show theme to whistle
3. ...? It's Alexander Courage, composer of the Star Trek theme, which you'll whistle as soon as you're done with Andy Griffith.
A sad grouping for fans of witty classic TV, whether conveyed in words or music.