Four vastly different contestants compete on four vastly different topics, all at the mercy of host Tom Gleeson. This week's subjects: HMAS Melbourne, Justin Bieber, Socceroos and Jim Henson.

Four contestants, one Big Brass Mug, and a host who takes no prisoners. Tom Gleeson tests his charges on their expert topics of Ghostbusters, Pink Floyd, classic Minis and the Kim Dynasty.