Gwyneth Paltrow
Catherine Llewellyn
Anthony Hopkins
Robert Llewellyn
Jake Gyllenhaal
Harold 'Hal' Dobbs
Hope Davis
Claire Llewellyn
Danny McCarthy
Cop
Tobiasz Daszkiewicz
Limo Driver
Gary Houston
Professor Barrow
Leigh Zimmerman
Friend at Party
Colin Stinton
Theoretical Physicist
Leland Burnett
Band Vocalist
John Keefe
University Friend
Chipo Chung
University Friend
C. Gerod Harris
University Friend
Roshan Seth
Professor Bhandari
Anne Wittman
Friend at Party
Lolly Susi
Airport Check-In Lady