Patricia Arquette was in Stigmata with Jonathan Pryce
Jonathan was in Pirates of the Carribean: The Curse of the Black Pearl with Orlando Bloom
Orlando was in The Lord of the Rings with Viggo Mortenson
Viggo was in A Perfect Murder with Gwyneth Paltrow
Gwyneth Paltrow was in Proof with Jake
Jake was in Brokeback Mountain.
Not bad, huh?
Next: (not sure if he's been named...) Michael Keaton.