Suggestions by @siddarthsid

Art Carney

as Julius Levinson in Independence Day (1976)

Lee Remick

as First Lady Marilyn Whitmore in Independence Day (1976)

Elliott Gould

as David Levinson in Independence Day (1976)

Robert Redford

as President Thomas J. Whitmore in Independence Day (1976)

Carl Weathers

as Captain Steven Hiller in Independence Day (1976)

Tom Stoppard

as Writer in In Bruges (1988)

Stephen Frears

as Director in In Bruges (1988)

Albert Finney

as Priest in In Bruges (1988)

Gary Oldman

as Ray in In Bruges (1988)

Daniel Radcliffe

as Mad Hatter in DCU Batman

Paul Rudd

as Gordon in DCU Batman

Kieran Culkin

as Joker in DCU Batman

Colm Feore

as Alfred Pennyworth in DCU Batman

Navid Negahban

as Ra's Al Ghul in DCU Batman

Claudia Doumit

as Talia Al Ghul in DCU Batman

Kaya Scodelario

as Selina Kyle in DCU Batman

Theo James

as Bruce Wayne in DCU Batman

Nikolaj Coster-Waldau

as Illya Kuryakin in The Man from U.N.C.L.E. (2005)

Ben Affleck

as Napoleon Solo in The Man from U.N.C.L.E. (2005)

Natalie Portman

as Gaby Teller in The Man from U.N.C.L.E. (2005)