British actor Bob Hoskins was driven to the brink of insanity by his role in 1988 movie Who Framed Roger Rabbit - he spent months suffering hallucinations of cartoon characters from the film.

The movie combined animation with real-life action and saw Hoskins acting alongside imaginary co-stars, who were added in later in the production process.

Hoskins, 67, admits spending eight months talking to a cartoon character affected his mental health - and he began seeing characters from the film long after shooting finished.

He says, "I think I went a bit mad while working on that. Lost my mind. The voice of the rabbit was there just behind the camera all the time, you just had to know where the rabbit would be at all times, and Jessica Rabbit and all these weasels. The trouble was, I had learnt how to hallucinate. If you do that for eight months it becomes hard to get rid of. I went to this one do (event) where I got talking to a very country lady with a big hat and there was this weasel in her hat."

And Hoskins' hallucinations grew so problematic, even his young daughter began to notice he was struggling. He adds, "My daughter, when I got from filming in San Fransisco, said 'Dad, slow dow, slow down. You're going barmy (mad), mate.' And I was."

