McVitie, I would be very careful. I read in the news this week that a guy had been convicted of possessing child pornography because he had a jpg of some cartoon characters (Simpsons I think) in various obscene poses. His defence was that it was fictional but he still got done. It was in a non-UK country (one of the Scandinavian countries I think) but it shows how the bounds of criminality is shifting.
If you like the Simpsons, do yourself a favour and head for the Simpsons ride at Universal Studios, Orlando - we used to love the "Back to the Future" ride in LA when we lived out there and this is orders of magnitude better! We had priority passes and looped around to ride this three times in succession. Excellent!