Sometime in the early 1990's our friends at the BBC decided to raid their archives and put out a series called DJ Heaven profiling some of the leading DJ's. This clip from the begining of the show serves as a sort of potted history of John Peel.
Further recommended links:
John Peel introduces Orange Juice's Rip It Up link.
What's in John Peel's legendary record box? This is the box he would have saved had his house ever caught fire, link.