I began watching Doctor who in the 80s with reruns from Tom Baker's time as the doctor so that Doctor was the one that imprinted on me the most and the model which I hold all the other doctors thereafter. I got to meet Sarah Jane Smith, Harry, Leela, K-9 and then I dopped off thereafter. When Netflix first started, I decided to try to start from the beginning and watched the first doctor and some of the second. It's hard to find all the earlier seasons as that BBC purged their files at some point after the series was going and those files are lost. I did get to see the episode of the "toymaker," and hadn't seen him again in a long time. The Daleks, Cybermen the Master, they all keep churning back up but I haven't seen him since Doctor 1! There is no better actor I could think of that could bring the toymaker to life than Neil Patrick Harris. He was perfect for the part and I'm thinking he'll show up again later on.
The toymaker is a celestial being that has unlimited powers, but he chooses to use them for trickery and jest. While he seems harmless in his actions, he's actually deadly but for some reason likes to toy with the Doctor as that he's one of the more clever begins the toymaker has encountered.
Watch this episode if you liked Russell T. Davies storylines, David Tennant as the Doctor, Donna or Neil Patrick Harris in anything.