@catpain challenged me to the above 6 degrees:

Errol Flynn was in Dawn Patrol with David Niven
David Niven was in Curse of the Pink Panther with Robert Wagner
Robert Wagner was in Austin Powers with Mike Myers
Mike Myers was in So I married an Axe Murderer with Nancy Travers
Nancy Travers was in 3 Men and a Baby with Steve Guttenberg

Had to think about that 1...