Lately there have been a handful of books and films looking at the roots of skateboarding. SK8FACE is a documentary that looks at one of the more niche elements of skateboarding culture - the progression of the deck graphics, especially between the 70s and today. Many kids aligned themselves with a particular skater simply because his skating was sick and his board graphics were equally as sick. Considering that the first Tony Hawk pro model (in mint condition) fetches upward of $3000 these days it's a niche to take note of.