Thank God Peter Helliar, Stephen Curry, Cal Wilson and Josh Lawson are here.

Thank God Merrick Watts, Kate Kangbroek, Nish and Hamish Blake are here.

Tony Martin, Eddie Ifft, Julia Morris and Shaun Micallef step through the door.

Akmal Saleh, Rebel Wilson, Dave Hughes, and Josh Lawson have a go at the door.

Thank God Frank Woodley, Ross Noble, Matt Tilley and Julia Zemiro are here.

Merrick Watts, Nish ,Bob Franklin and Fifi Box star.

Tony Martin, Cal Wilson, Carl Barron and Stephen Curry give the door a try.

Dave Hughes, Kate Jenkinson, Anh Do and Hamish Blake improv their way through the blue door.

Thank God Peter Helliar, Peter Rowsthorn, Ryan Shelton and Rebel Wilson are here.

Cal Wilson, Arj Barker, Sean Choolburra and Merrick Watts improv their way through the blue door.

Angus Sampson back for the final episode of the season along with Hamish Blake, Shaun Micallef, Julia Zemiro and Anh Do.

Tony Martin owns a mine, Cal Wilson is a medium impressed by fire, Franklyn Ajaye is a boxer set to help troubled kids, and Merrick Watts pilots a grounded plane. All together, they're employed by a nightclub.

Thank God Heath Franklin, Kate Langbroek, Angus Sampson and Tony Truslove are here.

Thank God Rebel Wilson, Merrick Watts, Alan Brough and Akmal Saleh are here.

Sam Pang, Urzila Carlson, Guy Montgomery, Anisa Nandaula & Hamish Blake, step through the blue door for the last time this series, on Thank God You're Here.

Anh Do is an officer in a kids show, while Julia Zemiro has traveled around the world - twice. Colin Lane loses an arm and fights the French, and Adam Hills talks about a building being built. All together, their team won the championship.

Fifi Box, Glenn Robbins, Frank Woodley and Akmal Saleh guest star.

Fifi Box is dressed in a tracksuit, Frank Woodley is fitted out in Roman era finery, Angus Sampson is scrubbed up and ready, and Peter Rowsthorn looks like a professional.

Santo Cilauro, Peter Rowsthorn, Robyn Butler and Angus Sampson step through the door this week.

Felicity Ward is a Aviator at a media conference, Hamish Blake is a contestant on a dating show, Josh Lawson is a vampire meeting his girlfriends parents, Angus Sampson is a police officer at a law drafting conference and Toby Truslove is a captain of a spaceship. All together they're part of the 'Showbiz Squares' game show scenario.

Akmal Saleh, Shaun Micallef, Alan Brough and Julia Zemiro guest star.

Angus Sampson manages a hotel, Rebel Wilson is entering royalty, Jordon Raskopoulos is a Roman scholar, and Dave Hughes is a children's' entertainer.

Matthew Newton makes his debut in a green velvet jackets. As does Shaun Micallef in an enthusiastic t-shirt. Fifi Box returns all primped and put together like a proper lady. While Angus Sampson walks through the door in a tweed and leather jacket.

Peter Rowsthorn, Josh Lawson, Angus Sampson and Julia Zemiro are ready to step through the door this week.

Josh Lawson, Fifi Box, Bob Franklin and Frank Woodley share the stage this week.