The one where the Doctor meets a talking sea kale...
The one point at which I find myself quite enjoying Henry Woolf's performance as the Collector is when he's talking about the enjoyment he gets from the duodecaphonic sound of a public steaming. "The deeper notes of despair, the final dying cadences. The whole point of a good steaming is the range it affords." At that moment, the Collector is a nasty little git, a villain worthy of booing. As the Doctor says, he's a "fish-blooded sadist". But otherwise, he's just a silly Davros rip-off with remarkable eyebrows.
Naturally, the Doctor manages to rescue Leela from the steam chamber (entering like Agent Mulder with a searching torch beam). After that, it's Team Doctor all the way as he rallies the rabble and orchestrates a way to overthrow the Company. The plan is to rig the public address system to issue some fake news that the rebellion is succeeding, and in tandem with the reduction of PCM in the air, this should incite an uprising among the workers, and result in an actual successful rebellion.