71. Invasion of the Dinosaurs

And here's the one with the rubbish dinosaurs. Despite a cracking modern day political drama (with dinosaurs), the said dinosaurs are SO bad it's distracting. Granted in 1973/1974, this was almost the height of special effects. I wish they could have done a special edition with new CG dino's so it's not SO bad.

This story also showcases Captain Mike Yates as he fulls under the influence of the antagonist group and betrays UNIT. He ever pulls a gun on the Brigadier! Sarah Jane also seems to have integrated herself into UNIT as the Doctor's assistant. 

While this story is a fun romp around 70's London, these 6 episodes could have been condensed to 4 for a tighter story. And less dodgey dinosaurs!

http://en.wikipedia.org/wiki/Invasion_of_the_Dinosaurs