Proof

Gwyneth Paltrow

as

Catherine Llew...

Anthony Hopkins

as

Robert Llewell...

Jake Gyllenhaal

as

Harold 'Hal' D...

Hope Davis

as

Claire Llewell...

Danny McCarthy

as

Cop

Tobiasz Daszki...

as

Limo Driver

Gary Houston

as

Professor Barr...

Leigh Zimmerman

as

Friend at Party

Colin Stinton

as

Theoretical Ph...

Leland Burnett

as

Band Vocalist

John Keefe

as

University Fri...

Chipo Chung

as

University Fri...

C. Gerod Harris

as

University Fri...

Roshan Seth

as

Professor Bhan...

Anne Wittman

as

Friend at Party

Lolly Susi

as

Airport Check-...