There are a ton of films I could review in this article - including Beyond the Darkness, Cannibal Holocaust, Gestapo's Last Orgy. You can watch a film of Bava's and appreciate his artistry, and then in the next step you can watch a film of D'Amato's and wallow in filth. Italian cinema is so brilliant because it deals with extremes.
There are certain names that pop up time and time again with Italian exploitation - Lucio Fulci, Joe D'Amato, Umberto Lenzi - but there are Italian directors we wouldn't dare tag with an exploitation label - Mario Bava, Dario Argento, Michele Soavi.