In this celebrated comedy, guest stars Angus Sampson, Hamish Blake, Josh Lawson and Tanya Bulmer must hilariously navigate an unknown situation greeted only by the line 'Thank God You're Here!'

In this celebrated comedy, guest stars Bob Franklin, Fifi Box, Hamish Blake and Peter Rowthorn must hilariously navigate an unknown situation greeted only by the line 'Thank God You're Here!'

Hamish Blake looks like he stepped out of the 1950s. Anh Do tries on a chef's hat. Cal Wilson gets gussied up in a formal gown. And Tony Martin ties out the hipster look. For the group challenge, they all don suits of armor.

Akmal Saleh is dressed in an ethnic outfit of some sort. Hamish Blake has a tie and white lab coat. First-timer Anthony Field is put in a martial arts uniform. And Kate Jenkinson looks most ladylike in her corsetted dress and petticoat.

Thank God Shaun Micallef, Julia Zemiro, Tony Martin, Hamish Blake and Frank Woodley are here.

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

Dave Hughes, Kate Jenkinson, Anh Do and Hamish Blake 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.

Hamish Blake is a knight in shining armor, Rob Carlton is interrupted on the 18th hole, Peter Rowsthorn tries to sell some camping equipment, and Josie Long walks the red carpet.

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.

TV Host and radio legend, Hamish Blake plus comedians Emma Holland, He Huang and Ross Noble step through the blue door on 'Thank God You're Here.'