Heavy metal music is very much “uncool” now.
Some of the bands that I do like (80’s and 90’s period) = Great White (Angel Song), Cinderella (Don’t Know What You Got til It Gone) , Def Leppard (Hysteria – they will have a concert with Heart in Dallas in July 20th), Guns N Roses, Scorpions, Van Halen, Iron Maiden, just to name a few.
Here is a very much “uncompleted” list = http://en.wikipedia.org/wiki/List_of_heavy_metal_bands
Some of the new “heavy music” bands that I like = Linkin Park, System Of A Down.