Irwin Allen
Voyage
to the Bottom
of the Sea

Though by all accounts, Allen loved to sit in his office and plan fantastic new adventures, he was never more at home than on the set, directing.  From the viewer's perspective, too bad he didn't spend more time directing, as given a descent script, he was quite capable.  It was his brilliant casting and ability to woo genuine talent into his TV shows and movies that brought additional depth to sometimes less than sterling scripts.  No one denies that the man had energy.