Gretel Killeen (born 3 February 1963) is an Australian comedian, television presenter, media personality and author. She is known for being the host of Big Brother Australia from its inception in 2001 until the 2007 season (including Celebrity Big Brother in 2002). Killeen hosted the 2009 TV Week Logie Awards. Career Television Midday From 1989 to 1991, Killeen was a regular on Midday with Ray Martin on the Nine Network. She wrote and featured in the sketch A Town Like Dallas, a parody of the genre of soap opera. Coast to Coast In 1990, Terry Willesee, John Mangos and Killeen hosted Coast to Coast for the Nine Network after the departure of Graham Kennedy from the program, but the program in the new format was short-lived. Big Brother Killeen was host of Big Brother Australia, from its first season in 2001. She hosted each series up until its seventh season in 2007. On 28 October 2007, The Sunday Telegraph reported that, as a part of a revamp of the show, Killeen was being replaced as host by Kyle Sandilands and Jackie O from 2Day FM. Other television roles Killeen, along with Daniel MacPherson, co-hosted the Sydney New Year's Eve 2006–07 telecast and also the Australia Day eve celebrations on 25 January 2006. She was also the host of Ten's coverage of the Australia Day ceremony in 2007. In 2009 Kileen hosted the Logies and was lowered onto the stage in an angel costume. She played nurse Angela Mercie in two episodes of the YouTube web series The Horizon in 2013. In 2015, Killeen co-hosted ABC TV series How Not to Behave with Matt Okine. In 2019, Killeen appeared as a contestant on the Australian version of The Masked Singer as the Octopus, and was voted off in the first episode. Killeen is a regular guest on morning/talk-shows such as; Studio 10, Sunrise, Today Australia and Today Extra Australia and The Project. Killeen has also appeared on Beauty and the Beast, Midday, SlideShow, Good Morning Australia, Celebrity Name Game, Q&A, Good News Week, You Have Been Watching and Talkin' 'Bout Your Generation. Radio Nova 100 In 2003, Killeen filled in on Nova 100's Hughesy, Kate & Dave whilst Kate Langbroek was on maternity leave. Literary works As an author of a number of books, Movie roles Killeen has a cameo in the Australian film Gettin' Square as Rhonda Halliwell. Stage roles