I've really been appreciating all the notices on this site of free ballet streams, many of which I wouldn't have found on my own. I know there are a number of opera fans here, so I thought an opera-specific thread would allow us to pool our knowledge without cluttering the main thread.
As many have doubtless seen, the Mariinsky, the Bolshoi and a number of other institutions are streaming a lot of opera alongside their ballet offerings.
Dutch National Opera currently has the complete R