I thought Mathew's genius anticlimax was sure to win - until a few seconds later (Greg didn't agree though). It's funny that he described them as Rube Goldberg machines since that's the American term - we would say a Heath Robinson machine.
Monsters have been a bit of a theme this series.
The members of the public must have found being in that park weird - I wonder if local got used to it since it happened at least five times.
"Your smell seduces ours nostrils like moths to a flame" - wtf.
I thought Rosie was clever to have undignified people there she's to be compared against but it didn't really work (perhaps due to her non-deep message).
Vase via route B - I'm surprised they didn't have routes A and Z just to maximise the chances to correct Jason.
No-one thought of collapsing the tunnel and just stepping through like it's a hoop.