United Kingdom, July 20 -- Samantha Morton found it "bittersweet" to be compared to the late Heath Ledger.

The 49-year-old actress plays the enchantress Circe in The Odyssey and director Sir Christopher Nolan recently revealed the crew applauded her after filming one of her scenes, a reaction he and producer wife Emma Thomas had only previously seen during filming of The Dark Knight Rises with the late actor.

And Samantha felt very "emotional" when she heard the comparison because she had always wanted to work with Heath - who died from an accidental overdose in January 2008 - and came close when she was cast in 2005's The Brothers Grimm but later replaced by Lena Headey on the insistence of producer Harvey Weinstein.

Samantha told Ent...