Freaks & Geeks was an extremely accurate (painfully at times) depiction of high school in 1980. Outstanding in every way. Well-observed details, excellent acting, and some of the best writing I've ever seen in a TV show. I was heartbroken when it was cancelled, and I even went to the Museum of Broadcast Communications in downtown Chicago to see the three episodes that had never aired. I met the creators/producers/main writers of the show, Paul Feig & Judd Apatow, who were very cool guys. They were also the brains behind Undeclared, another short-lived but great show.
Needless to say, I not only have the Freaks & Geeks DVDs, but the bonus set packaged in a yearbook with all sorts of extras from the show. Highly recommended to all.