Whitesnake.
Don't laugh, Coverdale's vocals are second only to Plant in my mind (and he even looks like Plant). In fact, no band sounds more like Led Zeppelin without copying them. Exhibit A:
'Still of the Night'
http://www.youtube.com/watch?v=1-Isl_KX2WQ
Coverdale's amazing range and the guitarist even uses a bow!
No band did the metal ballad better than Whitesnake, and they pretty much started the trend of music videos staring hot models (not that I would notice, being married).
Exhibit B:
Tawny Kitaen in 'Is this Love'
http://www.youtube.com/watch?v=ujnH4yNqL8E&feature=related
Now, when you are all done snickering, tell me who is the second most underrated band behind Whitesnake?
