A question for my fellow ER lovers!

When the series finale of the show ended in 2009 there was a special episode that aired with it; a documentary episode where the actors and directors all spoke about the show and for the life of me I just can not find it any where online. I can't even find mention of it! If any of y'all know what I'm talking about and knows where I could watch it again, I would be forever grateful. Thank you!!!

Edit: thank y'all so much!! I was going nuts trying to find it.