This might be closer to a 4 for me, but I give out so few 5's that I'll round up. I love this album. I discovered Sigur Ros through The Life Aquatic (that scene can still make me tear up if I think about it for too long) and spent a lot of time with this album in my teens. It's great studying/focus music. Weird and vibey and gorgeous. Super glad to see it included on this list!