ASP.NET MVC 2.0 will now, by default, throw an exception when an action attempts to return JSON in response to a GET request. I know this can be overridden on a method by method basis by using JsonRequestBehavior.AllowGet, but is it possible to set on a controller or higher basis (possibly the web.config)?

Update: Per Levi's comment, this is what I ended up using-

protected override JsonResult Json(object data, string contentType, System.Text.Encoding contentEncoding)
{
    return Json(data, contentType, JsonRequestBehavior.AllowGet);
}