Give Der Ring a chance
Thanks to an anonymous comment here, I have found Jad Abrumad's program on Wagner's Ring, "The Ring and I: The Passion, The Myth, The Mania." It is an interesting approach, which more or less explores the plot of the Ring, the music, Wagner, and modern responses. I'm fairly sure that none of the interpretations will be new to those who know the Ring, but it's a nice program nonetheless.
If you're really interested in what Wagner's doing and how it works, then you might want to check out Deryck Cooke's An Introduction to Der Ring des Nibelungen. His interpretations aren't exactly traditionalist - nor is his incomplete I Saw the World End, but it's entertaining and engaging for what it is.