Suggestions by @adamatc

Ezra Miller

as Kirk Hammett in Metallica Biopic

Chris Hemsworth

as James Hetfield in The Scrolls of Faith No More

Chris Hemsworth

as James Hetfield in Exit Light

Leelee Sobieski

as Jodie Foster in Biopics

Leelee Sobieski

as Jodie Foster in Anthony Hopkins biopic

Leelee Sobieski

as Jodie Foster in The Empire's Hollywood

Leelee Sobieski

as Jodie Foster in Paul Williams Biopic

Henry Fonda

as The President in Hitchcock 's The Pelican Brief (1968)

Edward Binns

as FBI Director Voyles in Hitchcock 's The Pelican Brief (1968)

Dean Jones

as Fletcher Coal in Hitchcock 's The Pelican Brief (1968)

Robert Donner

as Khamel in Hitchcock 's The Pelican Brief (1968)

Richard Crenna

as Gavin Vereek in Hitchcock 's The Pelican Brief (1968)

Laurence Harvey

as Thomas Callahan in Hitchcock 's The Pelican Brief (1968)

Jane Fonda

as Darby Shaw in Hitchcock 's The Pelican Brief (1968)

Audrey Hepburn

as Darby Shaw in Hitchcock 's The Pelican Brief (1968)

Sidney Poitier

as Gray Gantham in Hitchcock 's The Pelican Brief (1968)

Evan Hunter

as Writer in Hitchcock 's The Pelican Brief (1968)

Alfred Hitchcock

as Director in Hitchcock 's The Pelican Brief (1968)

John Kerr

as Sky in George Cukor and Vincente Minnelli's Mamma Mia

Judy Garland

as Sophie in George Cukor and Vincente Minnelli's Mamma Mia