The BBC's Planet B is growing on me - characters hunting through a series of virtual worlds for a friend, and dealing with "virals", avatars which are not being driven by humans, and "rogues" - virals which have become sentient. With the vagaries of iPlayer you just need to make sure you catch all the episodes before they die - I think I missed the first 1 or 2, and heard some out of order, but am now trying to go back through in the right sequence.
Could become a cult classic.
***Imported from old blog***
