Smoked paprikaoptional and additional lime wedges to garnish
Heat the grill to medium high.
In a small bowl combine the mayonnaise, sour cream, 3 tablespoons of the cheese, garlic, and chili powder. Transfer to a plate.
Brush the corn with the melted butter. Grill the corn for 8 minutes, until it is nicely browned in spots. Roll the corn in the mayo mixture, and place on a serving platter. Squeeze the lime over the corn, sprinkle with the remaining tablespoon of cheese, then sprinkle with smoked paprika if desired. Add the lime wedges, and serve immediately.