Bill Warren wrote:
Dr Acula wrote:
The novel is pretty cool too, Who Censored Roger Rabbit, by Gary K Wolf - who has an official site here:
  
  
As I recall, a significant difference between novel and movie is that the novel was about comic strip characters, the movie about animated cartoon characters.
It's been a while since I've read it, but I think the cartoons in the book were both in cartoons and in book form (there is a subplot about Tijuana Bibles, for instance). The characters can create verbal voice balloons like comics, but I don't think they have too.