Sadly, it has been reported that Bob Anderson, Darth Vader's stunt double in The Empire Strikes Back and Return of the jedi, has passed away aged 89. Here is what the Kurtz Joiner facebook page had to say:

It is with great sadness that we report that Bob Anderson, the man behind the lightsaber fights in The Empire Strikes Back and Return of the Jedi, and legendary swordplay in countless other films, has died at the age of 89. We had the very great pleasure of working with Bob numerous times over the years and always found him to be a gentleman, a professional and a legend. It was a privilege to know him and our thoughts are with his family and loved ones at this sad time. RIP Silverblade Bob.