Empire Online has an exhaustive and delightful retrospective up on The West Wing which is worth your time.
The closing quote is from Sorkin:
During one of our monthly cast lunches in the first season, Brad Whitford said, “No matter what we do from here on out, this show is the first line of our obits.” Martin, who was in Apocalypse Now, said, “I’m good with that”. Me too.
If you don’t have time for the whole thing (it’s long), DO make time for the 15 Things You Didn’t Know, which is fun despite the clickbaity headline.