The first concert I went to knowing the headliners (Volta & Yeah Yeah Yeahs) -- 3 days after this album came out. They played it in full, from start to finish. I wore out the CD by the time I was 18.
One of my best friends at the time handed this to me when I was 15, I had refused for a long time to really let myself enjoy Zeppelin. Safe to say after I gave them a real spin I never looked back.