King Crimson is amazing.
Robert Fripp is a g-d. He played some of the greatest guitar solos in history, like "Baby's on Fire" for Brian Eno or anything off of "Heroes" by David Bowie, and his Guitar Craft schools are heavenly and he can turn any tone-deaf kid who can't tune a guitar into a supergenius guitar monster.
Anytime anybody asks me who the most underrated band is, the answer is always the Residents, because nobody even knows who they are. I've been a huge fan for years, and I still don't know who they are. They've never revealed their identities, and they've been making music for about 38 years.
Here are 4 short music videos (1 minute each) by the Residents:












