Question: This American actor, singer, songwriter, and director acted in a science fiction drama film written that uses a multiverse hypothesis style an what kind of narrative?

 The film tells the life story of Nemo Nobody, a 118-year-old man who is the last mortal on Earth after the human race has achieved quasi-immortality. Mr. Nobody is a 2009 science fiction drama film written and directed by Jaco Van Dormael and starring Jared Leto, Sarah Polley, Diane Kruger, Linh Dan Pham, Rhys Ifans, Natasha Little, Toby Regbo and Juno Temple.  Nemo, memory fading, refers to his three main loves and to his parents' divorce and subsequent hardships endured at three critical junctions in his life: at age nine, fifteen, and thirty-four.  Alternate life paths branching out from each of those critical junctions are examined.  The speculative narrative often changes course with the flick of a different possible decision at each of those ages.  The film uses nonlinear narrative and the multiverse hypothesis style. <SEP> Jared Joseph Leto ( ; born December 26, 1971) is an American actor, singer, songwriter, and director.  After starting his career with television appearances in the early 1990s, Leto achieved recognition for his role as Jordan Catalano on the television series "My So-Called Life" (1994).  He made his film debut in "How to Make an American Quilt" (1995) and received critical praise for his performance in "Prefontaine" (1997).  Leto played supporting roles in "The Thin Red Line" (1998), "Fight Club" (1999) and "American Psycho" (2000), as well as the lead role in "Urban Legend" (1998), and earned critical acclaim after portraying heroin addict Harry Goldfarb in "Requiem for a Dream" (2000).  He later began focusing increasingly on his music career, returning to acting with "Panic Room" (2002), "Alexander" (2004), "Lord of War" (2005), "Lonely Hearts" (2006), "Chapter 27" (2007), and "Mr. Nobody" (2009).  In 2012, he directed the documentary film "Artifact".  In 2016, he played the DC Comics supervillain Joker in the DC Extended Universe film "Suicide Squad". <SEP> The Iron Dream is a metafictional 1972 alternate history novel by American author Norman Spinrad.  The book has a nested narrative that tells a story within a story.  On the surface, the novel presents an unexceptional pulp, post-apocalypse science fiction action tale entitled "Lord of the Swastika".  However, this is a pro-fascism narrative written by an alternate-history Adolf Hitler, who in this timeline emigrated from Germany to the United States in 1919 after the Great War, and used his modest artistic skills to become first a pulp–science fiction illustrator and later a successful science fiction writer, telling lurid, purple-prosed adventure stories under a thin science fiction-veneer. <SEP> S.I.N. Theory (abbreviation for Social Insurance Number Theory) is a 2012 Canadian science fiction drama film about a mathematics professor creating an algorithm capable of predicting an individual's future.  The film was written and directed by Richie Mitchell, and stars Jeremy Larter and Allison Dawn Doiron.  "S.I.N. Theory" was produced on a shoestring budget and makes notable use of existing mathematical theories to affirm the concept's plausibility.  The film has been screened at science fiction film festivals in Canada and the US, whereas it has been picked up for distribution by MCTV with an anticipated release Fall 2013.