Oscar nominees in Bob Dylan movie

After working together in Brokeback Mountain, Oscar-nominated couple Heath Ledger and Michelle Williams has joined the all-star cast of the Bob Dylan movie I'm Not There.

Ledger, who replaces Colin Farrell, would play one of seven actors representing the different aspects of Dylan's life story and music. Williams is set as Coco Rivington, a model with whom an androgynous folk star (Cate Blanchett) is taken. Also in the cast are Christian Bale, Julianne Moore and Richard Gere.