I just watched "The Ark in Space" last night on Netflix. It was one of the first ones I remember seeing as a kid and it was cool to watch it again. Fourth Doctor, Sarah Jane, Harry Sullivan...ahhh, nostalgia. 
They also have "Pyramids of Mars" & "Tomb of the Cybermen," so I'll check one of those out next -- maybe the latter, since I haven't seen that before.

They also have "Pyramids of Mars" & "Tomb of the Cybermen," so I'll check one of those out next -- maybe the latter, since I haven't seen that before.