That was pretty silly; the premise that goo below the earth will turn you into a werewolf like creature.
Anyway, as for what I personally believe are good episodes from each of the Doctors:
For Pertwee, I really enjoyed “Death to the Daleks”, “Planet of the Spiders” as previously mentioned, and “The Time Warrior”.
First Doctor recommendations: “The Keys of Marinus”, “The Aztecs”, “Planet of Giants”, and “The Chase”, which has an episode where the Daleks are beaten by a bunch of amusement park robots :D.
Some of those episodes are kind of long though. The old episodes could be four to six 25 or more minute episodes.
And finally, for the second Doctor, I’d recommend: “The Tomb of the Cybermen” which is kind of interesting, although I kind of cringed at the character of Toberman, a black servant who seemed somewhat a simpleton.
“The Mind Robber” as previously mentioned, and his last episode, “The War Games”, although it’s pretty long, being made up of 10 25minute episodes.
Slightly off topic, there are episodes from each Doctor which I have always wanted to see, but they are incomplete. I’m considering this. Has anybody ordered anything from them? Is it any good?