Carson had a guest on his show (Harold Robbins maybe) who was involved in the making of "The Adventurers." Carson was offered the lead role during the interview, but in spite of the approving applause, he turned down the part.

Mel Brooks reportedly asked Johnny Carson if he wanted to play the Waco Kid.

Johnny Carson was considered for the title role.

The filmmakers really wanted Johnny Carson, but he didn't want to do movies.

Johnny Carson turned down the lead role.