Brick, for some reason when you mentioned Meryl Streep, I was reminded of something I read about Katharine Hepburn not liking Streep very much. I believe "Click, click, click" were the words she chose to describe the sound of gears turning in Meryl's head.
anyway, I was just thinking that it's such an insult to performers, but most especially trained actors [as Patti is] to simply state that they're "playing themselves." I agree with almost all of what Brick says; actors have methods for approaching roles, and it's not going to change from role to role. I think Patti has a big enough personality that...duh, you know it's Patti LuPone when you go see a show. you pretty much always know it's Meryl Streep when you're watching a movie. that doesn't mean that they're simply playing themselves over and over again.
Unfortunately, I don't know either Patti or Meryl personally, but from what I've gleaned from interviews, neither one of them is like their characters. Older interviews with Patti, or interviews where she talks about Evita, show that she's actually easily hurt and almost a little frail. She's also sweet and funny; she still makes silly faces when she talks about meeting her husband and her eyes light up when she mentions her son. And I always think Meryl is thisclose to crazy when I watch her; not like some of the cold as ice characters she's played.
so that's why I personally don't think Patti plays Patti. [or Meryl plays Meryl]
When I see the phrase "the ____ estate", I imagine a vast mansion in the country full of monocled men and high-collared women receiving letters about productions across the country and doing spit-takes at whatever they contain.
-Kad