I guess it's a vegetarian version, although I never thought of it that way. Here's a recipe: Corn Chowder Recipe : Tyler Florence : Recipes : Food Network If you can't get fresh corn, I'd use frozen.
There's also corn and crab chowder: Corn & Crab Chowder Recipe I know I'm spoiled here on the coast, but I can't imagine making this with canned crab.
Thanks GG (and I notice there were loads of other variations on there too - including ones with cheese, and chicken!)
However, having acquired my very rare tin of clams, I really want to do a Clam Chowder and it would seem that putting sweetcorn in with it is a definite no no! (Though I still don't see why!)