It's kind of weird thinking about it, but here in Michigan there's very little basketball talk on sports radio. Obviously the Pistons suck, but we also have the #1 NCAA basketball team in the country and another top 25 team, but no one calls in about that either. Things will change once we get closer to the Big Ten tournament and later the NCAA tournament, but even then it's rarely a dominating subject.
NFL/NCAA football and Tigers baseball dominate. Even the Red Wings aren't getting much love right now, perhaps due to it being early in the schedule. I'd imagine LA sports radio is dominated by idiotic Lakers fans, Miami radio probably discusses the Heat, etc.