It's a battle royale as host Tom Gleeson puts four experts to the test on their specialty topics. This week's topics are M*A*S*H, Disneyland, Hitchhiker's Guide to the Galaxy, and Fender guitars. Tune in... HARD!

Battle of the Duds! Which returning contestant will seize a second chance to hoist the Big Brass Mug... Sydney Swans fan Matt, Pete Sampras expert Kaushik, reality TV devotee Josh, or Barry Manilow fan club president Julie?