Benedikt was a part of the locally renowned sketch comedy television show
Fóstbræður. Benedikt played the interpreter in
Lars von Trier's 2006 film
The Boss of It All, about an owner of an IT company that wishes to sell it after having pretended for years that the real boss lives abroad and communicates with the staff only by e-mail. Benedikt's first feature-length film as director was
Of Horses and Men in 2013. The film was selected as the Icelandic entry for the
Best Foreign Language Film at the
86th Academy Awards, but it was not nominated. The film won the 2014
Nordic Council Film Prize, and won the audience award at the 2014
Tromsø International Film Festival in Norway. His second film,
Woman at War, an eco-terrorism drama, premiered in 2018. It too was selected as the Icelandic entry for the
Best Foreign Language Film at the
Academy Awards for its release year, but it was likewise not nominated. In 2021, Benedikt appeared as
Steingrímur Hermannsson in the Icelandic television drama miniseries
Blackport. He wrote, directed and acted in the upcoming TV show
The Danish Woman. == Theater career ==