I loved it because it was one the first episodes that finally involved Riley - who gets left behind waaaayyyy too often! :P It was funny, exciting, and added a sense of family between the group that was not seen before (but is growing with the newer episodes).
I thought it was well done overall, and is one of my favourite episodes (although thats not saying much, because all the episodes are pretty much kick ass!)
This is the first episode i ever saw of painkiller jane and its the one that got me hooked. Mostly because of how different the personalities of all the characters are, but they manage to blend so well together that it seemed like they had been working to together there entire lives - and thats what i look for in a good show!