Watching this DVD, it's difficult to see why the series was in such trouble in the mid-1980s. This is not only great "Doctor Who", it's great television fullstop. A two-part (from the brief era in which the series had 45 minute episodes) stroy, it sees the flummoxed sixth Doctor discover the TARDIS needs more fuel, get embroiled in a political revolution on a mining planet, then watch the long-suffering Peri get turned into a birdwoman by a dastardly torture device.
The story really works in the 45 minute time slot. Scenes are allowed to be played out to their full potential and characters are allowed to shine. Though ultimately shorter than most of the 4x25 minute episode stories, there feels like there's more to it. A couple of characters serve only to reflect the feelings of a populace kept in line by televised punishments and never become part of the main storyline, and you just get the impression these would have been cut right out of a traditional length episode, which were always about leading up to the next cliffhanger. In this story, the plot is allowed to develop without needing to get the Doctor into dire straits every 20 minutes.
Villain of the piece, Sil, has been described as a love or hate character, and this is possibly true. I found his irate tongue flappings very entertaining. He comes across as the illegitimate child of Jabba the Hutt and Gollum from "Lord Of The Rings".
True star of the show, however, is the much underrated Colin Baker. People found his Doctor grumpy and dislikeable, but in this story he's courageous, witty and a little scatterbrained. He really does seem to care about poor old Peri, too. Incidentally, in an extended scene on the DVD (there are over ten minutes of cut material) he's shown to have a blazing row with Peri, which makes it look like they hate each other. I'm glad it was cut.
Whilst this story was a comment on the power of the media as a tool of an oppressive regime, I did wonder whilst watching it how Tony Blair and co would respond to a little Varosian democracy - the governor is tortured live on TV whenever the people reject his plans...