Although there is some of the Boosh style of humour in BatB, it's a very different kettle of fish. It jumps through time and memories a lot, and you need to be paying attention to keep up with what's going on. But as it unfolds it becomes clear that the strange, reclusive, slightly creepy main character is battling with his inner demons connected with the what happened the last time he left the house. Effectively trapped there, he relives that saga in his mind, and as he does so his demons appear to come to life. It's a fabulous, eerie, touching and thoroughly involving film that's got 'genius' stamped all over it. Don't go into it expecting an elongated episode of the Boosh, because it's nothing like - apart from a couple of stunning cameos from Noel Fielding and Julian Barratt. Well worth watching, and without doubt a five-star film.