Conversation so far:
Who is uri Geller?
self-proclaimed psychic Uri Geller.
how did he know johnny carson?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Johnny had been a magician himself and was skeptical" of Geller's claimed paranormal powers.
did he call out geller?
Per Randi's advice, the show prepared their own props without informing Geller, and did not let Geller or his staff "anywhere near them..
what happened?
When Geller joined Carson on stage, he appeared surprised that he was not going to be interviewed, but instead was expected to display his abilities using the provided articles.

Question: did geller fail?
Self-contained rewrite: did geller fail to display his abilities on Johnny Carson's show?