Conversation so far:
What tv specials was Ernie Kovacs on?
Ernie Kovacs did several television specials, including the famous Silent Show.
What did Ernie Kovacs do next after his Silent Show TV special?
Ernie Kovacs received his first movie offer.
What happened with Ernie Kovacs' Eugene character?
In the Silent Show, Eugene interacts with the world accompanied solely by music, sound effects, and parodies of typical television commercials and movie genres.
What was going on with the Silent Show?
Silent Show is an American half-hour television comedy special. It was broadcast on NBC, and was selected as the only television program at the 1958 World's Fair in Brussels.
What resulted from the popular Silent Show?
In 1957, Ernie Kovacs received the Sylvania Award for his work on the 1957 NBC special.
What movie offer did Ernie Kovacs get?
Ernie Kovacs received a movie offer from Columbia Pictures, resulting in his role in the movie Operation Mad Ball, and appeared on the cover of Life magazine.

Question: What did he go on to do next?
Self-contained rewrite: What did Ernie Kovacs go on to do next?