Chris Cornell is one hell of a frontman, yes. As is Scott Wyland(I can't spell is last name) from STP/Velvet Revolver. He can pull off anything he wants and he just has that image.
I would also give Kid Rock credit due to the simple fact if you ever see him in concert he's awesome. Even if you're not a fan you'll get into it, he can pull a crowd into anything. The guy owns the entire audience during his time.
Other than those three I'd have to mention this guy Forrest from a local band in my area called "Blue Storm". I don't know why, but every time I see this guy I get the feeling like I'm watching a legend in work.