This is my last one of these, I swear! I finished Frasier and my TNG rewatch, but I had to include these. Stephen Root is a favorite actor and Penny Johnson Jerald is a biggie. She managed to appear on TNG and in major roles in DS9 and The Orville. And Daniel Davis as Moriarty is obviously a TNG favorite.
Stephen Root
Penny Johnson Jerald
Daniel Davis
Stephen Quirk 