Minchin has a background in theatre and has appeared in various stage productions, in addition to small acting roles on Australian television. A documentary film about Minchin, "Rock N Roll Nerd" (directed by Rhian Skirving), was released theatrically in 2008 and broadcast by ABC1 in 2009. He is the composer and lyricist of the Olivier Award-winning, Tony Award-winning and Grammy Award-nominated show "Matilda the Musical", based on the Roald Dahl book "Matilda". His musical "Groundhog Day", based on the 1993 film, opened in London in 2016, winning his second Olivier Award, and opened on Broadway in spring 2017.