From 2008 to 2015, Jacobs was a substitute for Sacha Baron Cohen as the voice of King Julien in "The Penguins of Madagascar", again as an impression of Baron Cohen; Jacobs also provided additional voices in the series. In 2011, he won a Daytime Emmy Award for the role. Jacobs reprised his role in "Merry Madagascar" (2009) and "Madly Madagascar" (2013). From 2014 to 2017, he returned to the role in "All Hail King Julien". In "Penguins of Madagascar" (2014), Jacobs once again reprised his role as King Julien. He had also provided voice-overs in various commercials.