Dr Horrible is a mini series that was made by Joss Whedon and other members of his family on a budget during the writers strike and released on the internet and quite honestly it is one of the best things I have seen on TV in ages
It is fab for a variety of reasons
Firstly as it's written by the Whedons it is funny and brilliant all the way through. The story in mostly told through songs musical style and they are, without exception, awesome. It features both Neil Patrick Harris and Nathan Fillon who play the supervillan and superhero of the piece and spark off each other in their brilliantly cheesy way.
All in all it is pure genius from team Whedon and worth every penny