Great idea for a thread. Some good ideas for collabs, north face would be good esp after the Burton one. You do see the odd Japanese film tie in but don't recall a Hollywood blockbuster style one.
One obvious one which would (or might) work due to the strong image of both brands is Paul Smith. Casio seem to be doing a few collabs with UK brands, guess Smith might be a bit mainstream tho'
Otherwise always interested to see what Casio come up with, the more obscure and Japanese the better, my Tokyo Design Project is one of my coveted Gs