Stern is funny at times, but what irks me about him is his utter lack of knowledge about, well, everything. For example, when Michael Hutchence died, he was stunned to learn that Hutchence had a good-sized fortune. Stern claimed that there was no way INXS sold that many albums for Hutchence to be that wealthy. Of course, had Stern taken, oh, say 30 seconds to do some research, he'd see that some wise investments on Hutchence's part are how he gathered his wealth. This is but one example of Stern's complete lack of knowledge on life. Talk about breasts - Stern claims to know all. Talk about anything else, and the man is a moron.
Anyway, back to the topic - I don't really think Bono did much, other than let his hair grow out and dye it dark again. If you look at the PopMart era pics and now, the only difference is the length of his hair. For most men, short hair makes them look less bald - for Bono it was the reverse. Then again, he's one of the few men out there who looks better in longer hair (just like Edge is one of the few men who looks good in a goatee).