Gilliam struggling with Ledger's final scenes

Editing Heath Ledger's final movie has been tough for director Terry Gilliam, because he's reminded every day of what a great actor the tragic star was.

The Aussie was shooting Gilliam's 'The Imaginarium of Doctor Parnassus' when he died from an accidental drug overdose last year, and now the British filmmaker has the tough task of piecing his great scenes together.