Met to broadcast a documentary on its new Ring Cycle: Watch the trailer and excerpts here:

 Wagner's Dream

As I am sure you are aware, the MET will be showing its new Ring Cycle at cinemas again this year (details over the MET's Ring site by clicking here). However, in addition they will also be broadcasting a new  2 hour or so, documentary by Susan Froemke about the "making" of this cycle. As the publicity material from the MET describes it:

A new documentary by Susan Froemke. The stakes could not be higher as visionary director Robert Lepage, the world's greatest singers, and the Metropolitan Opera tackle Wagner's Ring cycle. An intimate look at the enormous theatrical and musical challenges of staging opera's most monumental work, the film chronicles the quest to fulfill Wagner's dream of a perfect Ring.

 Trailer below: