How can you tell if an actor's funny?

On his blog, comedy writer Ken Levine ponders the question of casting for laughs.

At the end of the day, I’ve always gone by the Nat Hiken test. Hiken, a brilliant comedy writer, created and wrote THE PHIL SILVERS SHOW and CAR 54 WHERE ARE YOU? He used to say that if an actor auditioned and he wanted to go right home and write twenty minutes of dialogue for him, THAT’S the actor you hire.