He was a very talented comedic actor and one of the four headliners (along with Imogene Coca and Carl Reiner) on Sid Caesar's "Your Show of Shows" in the early fifties.
I've been watching old repeats of "Hogan's Heroes". Howard was the original regular director, alternating with Gene Reynolds (who went on to do about a million MASH episodes).
Useless Informatino Bureau
Department of Redundancy Department
"Your Brain is not the Boss"