He is non sensical except when he does an interview then he is the best in the business. I used to hang out in a machine shop/hobby race car shop on weekends while in high school and sometimes while in college and the repartee that went on there happens on Imus. It is of men and what they are thinking irreverently. Most of the time it makes no sense but is gratuitous indeed and that is why it sells.
Everyone is entitled to make value judgements about these things, and in the big picture, they matter little. My own value judgement is that there is no value to what exits Imus' mouth. But to each his own.