Music was such a huge part of the show that the fictional club Tric was written into the show in Season 2 so the writers could feature more bands and artists.
Cast members Chad Michael Murray (Lucas), Bethany Joy Lenz (Haley), and 'James Lafferty' (Nathan) each directed an episode for the first time during season 6.
Peyton's Internet address punkndisorderly.com used to lead to an actual page featuring her art and the web cam.
James Lafferty is the only regular cast member to be the actual teenager playing a high school student even though he's already 20 years old by the end of season two.