Back in college, I worked in the rare books and collections area of the UGA library. One of their holdings was an 8x10 contact print of an Ansel Adams winter snow scene in Yosemite. It was the single most beautiful print I had ever seen, and I've never seen anything that surpassed it in terms of physical beauty. It was like looking through a window into another dimension.
I got seriously choked up! Large format haas never quite worked for what I want to do as a photographer, but it's always been a dream to work that way. I particularly admire Paul Strand's jewel like portraits, contact printed at 5"x6".