The Fly... Mork-style
Haha, I've seen people comment on a resemblance between Bono and Robin Williams (they did look similar in their youth) but I never knew Robin wore a pair of fly shades in an episode of Mork & Mindy! It's around the 3 minute mark in this part. :D Hilariously he even does some Bono-esque kneeling by the mic stand and harmonica playing, years before Bono himself would be known for such things.