I used to listen to a lot of sports radio but I quit because it got uninteresting. Dan Patrick is a professional and has a pretty good show. Tony Kornheiser is also hilarious.
ESPN Radio is awful though. I hear Van Pelt is alright, but Cowherd and Mike and Mike are two of the most deplorable hosts out there. Cowherd is more of a jackass than Jim Rome (remember, he was the one who plagiarized a Michigan site) and Mike and Mike are extremely uninteresting and annoying. "Heeeeeeey Greeny!"