John F. Kennedy, Jr.
The New York Jets quarterback got into a debunked whopper about President Kennedy's son and the former first lady.
O'Sullivan spoke with HuffPost about his new documentary on a JFK Jr. conspiracy theory, and the families whose loved ones follow it.
Shields recalled the Kennedy scion's "less than chivalrous" behavior during an appearance on "The Howard Stern Show."
Kimmel also spotted the person behind the bonkers new belief.
WHAT'S HAPPENING
Hundreds of conspiracy theorists gathered in Dallas expecting the late JFK Jr. to appear.
The late-night host also offered up a conspiracy theory of his own for them to chew on.
The late-night host rolls footage as the right-wing group's latest obsession falls apart in real time.