Godsmack is the most overrated band right now. Sully Erna should die and I mean that. He's a fucking tool.
Creed is overrated as well. Scott Stapp... Grr...
I try not to pay attention to "popular" music via television or radio. If everyone researched their music before buying it, I think "popular" music would be a little more tolerable.
Go to
www.allmusic.com and read about your favorite band. They'll suggest a million other bands to listen to and you'd be surprised how good the site is. Very comprehensive.