AceShowbiz - Robert De Niro is in early talks to join Joaquin Phoenix in the new "the Joker" origins movie.
Deadline sources claim the "Raging Bull" star is circling the role of a TV talk show host who plays a big part in the early life of Phoenix's character - before he becomes "The Joker".
Todd Phillips is directing the back story of Batman's arch-nemesis from his own script.
Phoenix was confirmed as the DC Comics villain last month. He joins a list of top names who have played the colourful bad guy, including Jack Nicholson, Jared Leto, and the late Heath Ledger.