One of the things I got for Christmas was the DVD of Brothers Of The Head, the film based on Brian Aldiss's novel (possibly even technically a novella since it is a short book and had another short story with it) of the same name. This is a (non-SF) novel about two conjoined twins who are found by a rock impresario and are turned into a rock band, Bang Bang.
The film takes the form of a mock documentary, with parts of a supposed Ken Russell film about the twins interspersed with it - there is a conceit that Aldiss's novel was actually factual and that Russell was stiffed by Aldiss for the fee Russell paid Aldiss (this is mentioned in a deleted scene, although a fake Aldiss appears in the film suggesting that they hadn't quite made up their mind whether to keep this conceit in or not).
Obviously in making a film of the novel they were forced to create the band's music, which is realised as 70s punk.
The film seems to have pretty much sunk without trace and given the decline of the Phoenix it is not surprising that this didn't get to Oxford (unless I didn't notice it). This is a shame as it is remarkably good, certainly better than the reviews I read of it suggested.
This was, really, the only Aldiss novel that I thought very much of and the film was better than I was expecting.