Maggie Gyllenhaal says Heath Ledger was 'incredible' in 'The Dark Knight'

Meggie Gyllenhaal and Heath Ledger portrayed Rachel and the Joker on Christopher Nolan’s hit 2008 film
Maggie Gyllenhaal will always look back fondly at her time sharing the screen with the late Heath Ledger on The Dark Knight.

In a newly-resurfaced clip from her March...