I'm a firm believer in listening. To listen best, especially when it comes to controversy, means to listen to both sides.
This is the best explanation I've found so far for the biblical basis of where Rob Bell is coming from. You will probably disagree--and remember at this point I'm only listening--but I think what's important to keep in mind is that this guy, though his rhetoric is sometimes harsh, is not your enemy. He is someone who is taking the bible seriously and extrapolating answers based on biblical reasoning (which is not to say he's right). That, I believe, is to be respected and honored.
Team Hell gets loud