John Lennon made these round shades famous.
Janis Joplin also rocked the round shades.
Ozzy Wears the round shades too
You can get this look with UB John Lennon Style Mirror Lens Sunglass w/ Drawstring Sunglass Pouch from Amazon
Bob Dylan popularized wayfarer glasses
Bono is often seen wearing shades
There are always aviators as seen on Slash