This encyclopedia is a great reference source for everything having to do with every American TV series ever produced. From I Love Lucy to The X-Files, they're all here, presented in concise summaries with data on every major cast member, the basic plot, and important episodes, as well as interesting trivia. very enjoyable to read, and great for TV historians. It seems that they do a revision every three years or so. It's been almost four years since the last revision, so hopefully we'll be getting one soon, which should obviously include data on all the new series, more data on the ones still on the air, as well as the finales of all the ones that have ended, such as Seinfeld, Murphy Brown, Home Improvement, et al.