Favorite tv show Director..

I hate to break it to you but according to IMDb David Crane hadn't directed a single episode of Friends. He was the producer of the series.
http://www.imdb.com/name/nm0186331/#producer

Directors of television shows are far less recognizable in terms of name recognition as their film counterparts.

But if you're simply using producer and director as interchangeable terms, this question would still be a tough one. I pay far more attention to the world of film directors and who directs each individual film and film franchise then I do about TV episodes let alone TV series.

Off the top of my head:
Joss Whedon for Firefly and Dollhouse;
Alan Ball for Six Feet Under;

Seth MacFarlane is mine favorite director .

My favorite director/writer is a guy I no longer remember. Big change re prime television, but he got shut down,. Will post if I see the name,

I like David Schwimmer because in friends show he doing outstanding work.
I become fan of him When i saw this show.