Summer Wars

This animation comes from the director of The Girl Who Leapt Through Time. The film's world is simultaneously a 'real' world where gifted student Kenji is persuaded to visit Natsuki's family for the summer – only to find he has to pretend to be her boyfriend when that's what he really wants to be anyway – and the virtual world of Oz, a cross between Facebook and the wider reaches of the Net, where anything might happen. The stories interweave brilliantly; in Japan it has already spawned novels and other spin-offs.