Seymour Hoffman signs for 'Max & Mary'

Rex Features

Philip Seymour Hoffman has been added to the cast of Australian claymation project Max & Mary.

The movie, which follows the story of Australian and American pen pals over a 20-year period, will also feature Toni Collette, Eric Bana, Renne Geyer and Ian Meldrum.

Comic actor Barry Humphries is the narrator.

Harvey Krumpet director Adam Elliot will helm the film, while Melanie Coombs produces.