I totally agree with whoever said Aerosmith. I can't think of a single good song of theirs I've heard produced in the last 10 years. And it's sad, too, because to me it looks like a formerly great band just phoning in easy-to-digest poprock for the teenybopper crowd. I wish they'd either challenge themselves (i.e. go beyond such rock classics as "Pink" and "Just Push Play") or stop writing new material.
I do have to jump in for Pink Floyd, though. They really did a lot for album-oriented rock and weren't afraid to do the experimental, the unusual, or the weird. I don't think they are overrated at all. That said, I can understand how it's not everyone's thing. Some of it is too "out there" for some people.
I, on the other hand, really don't get the Jimmy Buffett thing. ZZZZzzzzzz......
I like this thread, though, I'm going to start one for UNDERrated albums/artists