Conversation so far:
What tv specials was Ernie Kovacs on?
the famous Silent Show .
What did he do next?
Featuring Kovacs as the mute, Charlie Chaplin-like character "Eugene", the program.
What happened with the Eugene character?
Kovacs developed the Eugene character during the autumn of 1956.

Question: What was going on with the show?
Self-contained rewrite: What was going on with Ernie Kovacs show in 1956?