The "disillusioned hippie" look of the 70's gave way to the "guy with his finger stuck in the electrical socket" look of the 80's. From Bono's mullet to these guys, who apparently were standing pretty close to a hair spray factory when it exploded, hair went up and out, and up, and out, and up, and out, and...

 If follicular follies are where it's at for you, click here to read more about the history of big hair.