After a Spooneristic slip of the tongue The Good Doctors have now committed to make an animated film called Dilight Twinosaur. So far John Goodman and Amy Adams have been signed up as the voice talent for this feature.
Mark thought it could be the name of two characters in a versus-style movie; Simon saw it as a single character. Giles Blake shared an illustration with the show of a reviewer-and-contributor-headed dragon as his suggestion.
Sounds like more fun that Ice Age 3: Dine Of The Dawnosaurs, at any rate.