Conversation so far:
What are memorable moments in Rowan & Martin's Laugh-In?
The first season featured some of the first music videos seen on network TV, with cast members appearing in films set to various band music.
What happened after being one of the first music videos seen on network TV?
During the September 16, 1968, episode, Richard Nixon, running for president, appeared for a few seconds with a disbelieving vocal inflection, asking Sock it to me?“

Question: Did he accept?
Self-contained rewrite: Did Richard Nixon's opponent, Vice President Hubert Humphrey accept appearing on Rowan & Martin's Laugh-In?