zomg are you old only a few of these bands are metal. I mean, Soundgarden?????? The Ramones???????????????????
Ok if you want the best progressive thrash band around and don't mind politics thrown into the rocking then Propagandhi is the band for you. People think they are punk rock because they used to be on a punk rock label and their albums had punk songs, but now they are a full fledged thrash metal band, very melodic and progressive. Check out the following Propagandhi songs:
-Speculative Fiction
-Die Jugend Marschiert
-Rock For Sustainable Capitalism
-Iteration
-Purina Hall of Fame
-Back to the Motor League
And check out the two albums those songs are from, Potemkin City Limits and Today's Empires, Tomorrow's Ashes.
If you like metal but don't like In Flames, download their songs Embody the Invisible and Watch them Feed. Tell me you don't like those two In Flames songs at least.
Slayer rules. Check out their album God Hates Us All or their newest one they just put out. Especially the songs Payback, Threshold and Disciple.
If you want to hear the most psychotic metal song ever download When Good Dogs do Bad Things by Dillinger Escape Plan.
Wake the Dead by Comeback Kid is a great song but I don't like a lot of their other songs.
Others that have said here, Pantera, pre-Black Album Metallica, etc.
I am also getting into DragonForce and DevilDriver these days.
Whoever said Avenged Sevenfold isn't metal, why not?