Yeah, Bono's hair sucks.
It sucked for most of the Zoo TV tour as well. He got it right occassionally, as witnessed in the Zoo TV Sydney video. Most of the time it was too long/mullet-like, however. I have a signed photo of Bono from the Zoo TV era and one of my friends commented, 'Dude, does Bono have a mullet?' I looked more closely at the photograph and sadly replied, 'Yeah.' I couldn't really tell beforehand because the black hair kind of blended into the black leather jacket. It seems that no matter what era Bono is in, he likes to sneak the mullet in there somehow.
His current hairstyle, though, is a tragedy. It really screams "Aging rock star." I agree with other Interferencers about his 'Beautiful Day/ATYCLB promo photos' haircut. That was awesome. But then he let it grow out into this really shitty half-mullet shag thing. And now he's dyed it this artificial red color, which is funny because Bono's hair was never this red, even when he was 20. But whatever - he can keep that weird hair color as long as he cuts his hair to a respectable length. Something similar to what he had in 2000, preferably.
[/haircut rant]