If you saw the Foo Fighters documentary, Sonic Highways, you’ll remember the Dave’s autobiographical episode set in and around Washington DC when he talked about all the music and all the bands that went into making him into who he is today. A big chunk of that episode featured Dave’s punk rock hero, Ian MacKaye of Minor Threat. Dave even wrote Ian some letters–one of which was just unearthed. Let me read you this letter that was written by a 14 year-old Dave Grohl: “Good thrash. So I was wondering if you could give me some numbers of people to get in touch with. It would help. Thanx. David Grohl.” It came with a phone number. Who knew that this kid would become a superstar?