Farrell "honoured" to be playing Ledger role

Actor Colin Farrell has revealed he is "honoured" to be appearing in Heath Ledger's final film.

The Irish actor, along with Johnny Depp and Jude Law, will help director Terry Gilliam complete the work Ledger started on The Imaginarium of Dr Parnassus.

Speaking to the Sydney Daily Telegraph, Farrell said: "I will be honoured to be part of that.

"It makes me feel uncomfortable to think about it too much and to get into it really here, but it's an incredibly painful honour... and an honour I wish wasn't bestowed (on me), but an honour nonetheless.

"It's about getting Heath's work out there... He's too good for any of his work not to be seen, you know, and I'm really keen and looking forward to doing it and just doing the best job I can do."

Farrell was lined up to star in Bob Dylan film I'm Not There but was replaced by Ledger at the last minute.