Yes, as with every genre, there are lots of great artists, and then some not so great ones. When you include proto-punk and post-punk the pool becomes much larger. In my opinion some excellent punk musicians are Iggy and the Stooges, Atari Teenage Riot, Zach Hill, Joy Division, Velvet Underground, and lots of no wave/new wave groups. But I really cannot stand third wave ska-punk acts, they sound so watered down and lame to me.