There are some tricky dilemmas for the quintet of courageous contestants as the race to win Greg's shiny skull hots up. Lucy Beaumont wonders if she should risk flicking a forbidden switch. Julian Clary wonders if he needs more than one pie. Sue Perkins wonders if a deer head is preferable to a boundary line. Alex Horne wonders if the Taskmaster will ever respect him. And, faced with all this wonderment, Sam Campbel rips off his own head.

Prize task: The thing that is most guaranteed to make you groan.

- Sue Perkins: A recording of Brian Blessed telling you to groan. - 5
- Susan Wokoma: A collection of her previously underperforming prize tasks. - 4
- Julian Clary: An ugly wooden carved head his husband got him for his birthday. - 3
- Lucy Beaumont: A lesson in the importance of cartilage. - 2
- Sam Campbell: An electric toothbrush with model animal parts stuck to it. - 2

Task 1, Part 1: Do whatever you like with these switches for five minutes. You will then do a task in the lab for five minutes. The conditions in the lab will change according to when you switch the switches in here. Your time starts when Alex is confident you understand the task. Part 2: Balance the most tees on the shelves. You must stay on the platform throughout the task. You have five minutes. Your time starts when Alex is confident you understand the task.

- Lucy: 19 - 5
- Julian, Sam, Sue and Susan: All disqualified as they flicked the switch marked "DON'T", which turned on a hidden light box that lit up to say: "Disqualified". - 0

Task 2: Pie Wayne in the face. Wayne is outside the front door. You may not touch Wayne nor step on the red green. If you miss Wayne with the pie, you must copy Wayne's dance moves for ten seconds. You must not touch Wayne. Fastest wins. Your time starts when you open the front door. [Wayne is an air dancer.]

- Susan: 1:39 - 5
- Julian: 3:32 - 4
- Sam: 3:40 - 3
- Lucy and Sue: Disqualified for touching the red green. - 0

Task 3: Put yourself somewhere within the boundary. The person furthest from everyone else wins. The people closest together both lose two points. Also, throughout the task you must behave really weirdly. You have a maximum of ten minutes. Your time starts now.

- Sam: 14.24m - 5
- Lucy: 13.09m - 4
- Julian: 7.55m, but closest to Susan. - 1
- Susan: 7.21m, but closest to Julian - 1
- Sue: 7.39m - 0

Live task: Catch three balls on your head. After you have caught a ball you must shout: "ball". You may not step off your circles, move your circles, adjust your arms or touch the balls with your hands. Fastest wins.

- Julian - 5
- Sam - 4
- Lucy - 3
- Susan - 2
- Sue - 1

Final scores

- Lucy and Sam - 14
- Julian - 13
- Susan - 12
- Sue - 6

Tie-break task: Fire a party popper while sitting down. Furthest distance wins.

- Lucy: 123cm - Winner
- Sam: 108cm