Yeah, their first couple albums were punk rock:
http://www.amazon.com/Hold-Me-Up-Goo-Dolls...ie=UTF8&s=music
http://www.amazon.com/Jed-Goo-Dolls/dp/B00...ie=UTF8&s=music
(can't find their first self-titled album on Amazon...)
Superstar Carwash was starting to go more mainstream, but still had some punk elements:
http://www.amazon.com/Superstar-Car-Wash-G...ie=UTF8&s=music
It was pretty much downhill after that
http://en.wikipedia.org/wiki/Goo_goo_dolls
There's no doubt in my mind that they sold out. Do I blame 'em for the chance to make a ton of cash (and probably stay in music longer than they otherwise would've?). I guess not. But I do cringe everytime I hear one of their new songs because compared to the original stuff, it sucks, err, is "more polished and commercial in nature."
CW