When was the last GOOD series finale?

I sat with a group to watch the last episode of The Sopranos tonight. This group was made up of two dedicated fans of the show, and my sister. Like my sister I have never had an interest in the show, but I watched last week and had a vague interest because of the hype. I've never bought into the orgiastic delight that most public figure use to discuss how "brilliant" the show is, but with that said it is a good show. The show does build to a good climax, and then just ends with a blank screen. The first thing I thought of was the Seinfeld finale. Everybody was so incensed about how bad it was. Now it was a piss-poor episode, let alone a series finale, but I think much of the consternation was just over-expectation. Well sure enough the finale of The Sopranos was a news story on The ABC Nightly News. That's a little much. But as I read tonight, the HBO website has crashed due to angry fans of the show. Fan sentiment will be bad. It's all just a lead in to a Sopranos movie, and I can't blame them. The show must go on, but it does come to an end. As all good things do.