Jake Gyllenhaal Dennis Quaid as his father. In his theatrical debut, Gyllenhaal starred on the London stage in Kenneth Lonergan's revival of "This Is Our Youth" at the Garrick Theatre in 2002. Gyllenhaal said, "Every actor I look up to has done theatre work, so I knew I had to give it a try." The play, which had been a critical sensation on Broadway, ran for eight weeks in London's West End. Gyllenhaal received favorable critical reviews and an Evening Standard Theatre Award in the category "Outstanding Newcomer". In 2005, Gyllenhaal starred in the critically praised films "Proof", "Jarhead", and "Brokeback Mountain".
Proof (2005 film) called "Proof": "richer and deeper, simultaneously both funnier and more serious, than either "A Beautiful Mind" or "Good Will Hunting"." Timothy Gowers of the University of Cambridge, a Fields Medalist, and Paul Sally of the University of Chicago, acted as mathematical consultants, although the latter was dismissive of the film's mathematical relevance and accuracy. Proof (2005 film) Proof is a 2005 American drama film directed by John Madden and starring Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, and Hope Davis. It was written by Rebecca Miller, based on David Auburn's Pulitzer Prize-winning play "Proof". The plot alternates between events immediately following