I'll admit my big two: Hootie & the Blowfish and Huey Lewis and the News.
I'm right there with you on Hootie & the Blowfish. A good little bar band that happened to make it big and are better than they get credit for.
From an AllMusic review for their self-titled album:
"Those who accuse this band of being lightweight and terminally poppy are not only missing the point, they are also giving in to the worst kind of rock & roll snobbery -- the kind that says pop music really ought to be anything other than fun. On the other hand, those who accuse frontman Darius Rucker of sometimes delivering his lightweight, poppy songs with a bombast that is all out of proportion to their substance are actually onto something: Just consider the chesty roar with which he delivers couplets about, for example, minor domestic and emotional discomfort ("You need a little space/And I need mine"). But unlike Bono or Creed's Scott Stapp, Rucker's mistake is not in taking himself or his lyrics too seriously; it's just that that's the way he sings everything, and that big, chesty roar is a big part of what makes him fun to listen to....They're not trying to save the world, folks -- this is just rock & roll. And most people who say they don't like it are kidding themselves."