Here's one a little out of ordinary. Everyone knows of Pink Floyd (or at least, heard the name in passing). How many knew of David Gilmour's solo career? Before Roger Waters left Pink Floyd and Gilmour became the frontman.
In my opinion the man is an absolute genius when it comes to the guitar (I view Ritchie Blackmore and Tony Iommi the same way), he may not play screaming solos, but what he offers is extremely powerful nonetheless.