During the filming of Never Say Never Again, Steven Seagal (an aikido master) was asked to teach Sean Connery some martial arts. He agreed... and promptly broke James Bond's wrist.
[Julianna Margulies once worked with Seagal on Out for Justice. "His trailer was around the corner from mine on the Warner Brothers lot," Margulies recalled, "and I was walking by recently and he said 'Margulies, come over here and show me some respect!' He's not someone I keep in touch with."]
Sources
imdb.com
