an executive producer for No Strings Attached (2011), a romantic comedy in which she starred with Ashton Kutcher as a young couple in a casual sex relationship. She described the experience of making it as a "palate cleanser" from the intensity of Black Swan. It received unfavorable reviews but was a commercial success. She next agreed to the film Your Highness for the opportunity of playing an athletic and foul-mouthed character, which she believed was rare for actresses. Critics were dismissive of the film's reliance on scatological humor and it proved to be a box-office bomb. In her final film release of 2011, Portman took on the part of Jane Foster, a scientist and love-interest of the titular character (played by Chris Hemsworth) in the Marvel Cinematic Universe superhero film Thor. She liked the idea of Kenneth Branagh directing a big-budget film that emphasized character; she signed on to it before receiving a script, and helped develop her part by reading the biography of scientists such as Rosalind Franklin. Richard Kuipers of Variety commended Portman's "sterling work in a thinly written role" for adding dimension to the film's romantic subplot. Thor earned $449.3 million worldwide to emerge as the 15th highest-grossing film of 2011. In 2012, Portman topped Forbes listing of the most bankable stars in Hollywood. Her sole screen appearance that year was in Paul McCartney's music video "My Valentine", alongside Johnny Depp. The following year, she reprised the role of Jane Foster in Thor: The Dark World, which earned over $644 million worldwide to emerge as the 10th highest-grossing film of 2013. Forbes featured her in their Celebrity 100 listing of 2014, and estimated her income from the previous year to be $13 million. In 2015, Portman appeared alongside an ensemble cast, including Christian Bale, in Terrence Malick's experimental drama film Knight of Cups, which marked her first project after giving birth. She shot for it within a week of returning to work and she did not receive a traditional script or dialogues, improvising most of her scenes with Bale. She said that shooting with Malick influenced her own directorial venture, A Tale of Love and Darkness which was released in the same year. Based on Israeli author Amos Oz's autobiographical novel of the same name which is set in Jerusalem during the last years of the British Mandate of Palestine, the Hebrew-language film starred Portman who also