Worst Actor/Actress movie role combination

We all have thought about who would be perfect for a certain role, but have you ever thought about casting that would make you want to drown yourself in a giant tub of mustard? I've felt such rage when they actually thought of making Jack Black - Green Lantern

What do you think some of the WORST possible choices for actor/character would be?

Please keep all combinations gender specific. (i.e. No Whoopi Goldberg - Superman or Pee Wee Herman - Wonder Woman)

Heath Ledger Joker

YouTube video

Danny Devito as Bane.

meryl streep as wonder woman

There's...too many potentially horrible combinations to even begin listing them.

Triple H as Thor.

Kane as Bane 😛

John Cena as Superman .

probably arnie as Thor lol

Originally posted by Black bolt z
Danny Devito as Bane.

LOL

Picturing it is the best part.

Chris Rock as Superman

Rosie O'Donnel as Black Widow

Rock as Roadblock
And they made him a ninja

Clooney as Batman

Berry as Storm

Johnny Storm as Steve Rodgers

vin deisel as lex luther

Originally posted by Odekahn

Rosie O'Donnel as Black Widow

Betty White as Catwoman

Originally posted by pym-ftw
Rock as Roadblock
And they made him a ninja

Clooney as Batman

Berry as Storm

Johnny Storm as Steve Rodgers

Like the Clooney reference.

Originally posted by Odekahn
Betty White as Catwoman

Originally posted by psycho gundam

Hehe.

Jonah Hill as Batman.

Ben stiller as Superman

Eddie Murphy as Superman.

Christopher Lee as Franklin Richards