Wow! That was really something! This story has the grossest maggots I have ever seen (but they are an amazing puppetry effect) and this highly political criticism and pro-environment story that I really enjoyed. Jo and Clif, the first legit couple in the show -- without feeling forced (like how Susan's was) or kind of rushed (how Vicky had her farewell). Clif, the young genius, is quite charismatic and soon is tuned to the Doctor's frequency. And the ending, is happy -- and sad. The Doctor hates goodbyes...