[citation needed] In 2010, McMullen signed with the Seven Network as host of their new primetime game show Minute to Win It.

[2][4] On 29 June 2011, McMullen debuted as the host of the prime-time reality show Love in the Wild on NBC in the US and CTV in Canada.

[6][8][9] On 13 March 2016, it was announced that McMullen had re-joined the Seven Network once again to host a new show, The Big Music Quiz.

[10] In late 2019, McMullen appeared in the first season of The Masked Singer Australia as the Prawn and he was fifth voted out of the show.

[13] In 2023, McMullen competed on the seventh season of The Amazing Race Australia with his nephew, Tristan Dougan.