I liked the Captain Sulu ones but they were not full dramatizations. Its been awhile since I listened to them but you heard each character describing events. In Sulu's case his Captain's Log. Moving back and forth between these, I guess, monologues for each of the small casts. But there was no actual scenes of the characters interacting. I am sure this limited the success of these.
Cacophony was my favorite. I still listen to it every few years. An alien planet which has been receiving old Human radio signals. A group there rebroadcasts them to its population which perceives it as the voice of the gods. It was a clever idea to have audio recordings be the basis for the plot, which totally uses the medium. It used actual old radio news broadcasts.