Hit comedy cartoon show The Simpsons may be turned into a full-length movie - as long as it isn't yet another "dismal" TV to big screen feature.

Creator Matt Groening is in talks with movie bosses about bringing BART, HOMER and the rest of the dysfunctional family to cinema screens - but he is approaching the prospect with caution.

He says, "We want to make sure it doesn't follow in the dismal footsteps of other TV shows turned into movies.

"I can only think of one that worked and that was South Park."