This is the best corn I have ever had, and the chief motivator in my acquisition of a barbecue. Golden, slow-roasted corn, lots of salt, oil and patience.
Family (read: cousin-in-law's family) recipe.
I've used canola oil spray, but garlic chilli olive oil really pushes it over the edge. Also: Maldon Sea Salt (smoked, if you're adventurous) gives is a extra layer of texture, though kosher will always work too.