The Incredible Mr Limpet

I don't know if you've heard this but there was once a remake of the 1964 classic The Incredible Mr Limpet in the works during the 1990's. Now in the film Don Knotts plays a nerdy bookish character who dreams of being a fish and after falling into the ocean finds that he has indeed turned into a fish and he ends up becoming a big hero at the end. Now in the 1990's there was talks of a remake of this starring Jim Carrey in the Don Knotts role- there were even some concept art designs of Jim as a fish (you can view them on cartoonist Bob Camp's blog). But something happened and the film never did get made. Now I hear that Kevin Lima (director of Enchanted) is going to direct it but there is no confirmation on who is going to play the part of the title character Mr Henry Limpet. I would like to play that part, that would a pretty fun character to be- not to mention I would look really cool as an animated talking fish.