Here's pretty much all that we know about her: She was raised in North Carolina, she just turned 30, she's in every seventh movie opening in 2011, and though we've only seen three of them thus far (The Tree of Life, The Help and Take Shelter) it takes a minute in each to realize that yes, that's her. Even in photoshoots she seems to be more than one person.
Is she a moldable young starlet?
Is she a Swintonesque Off-Hollywood provocateur?
Is she a Lead Star just waiting for her own vehicles?
Further IMDb and Wikipedia grazing reveals that she graduated from Juillard and that her best friend is the actress Jess Weixler (of Teeth fame. How about that?) but the point is this: we like people we can't pin down immediately.
I don't want to play the same character twice. There's something about the feeling of 'I don't think I can do this.' If you have that moment of doubt, you have to rise up and meet it. I learn from my failures more than my successes."
-Chastain to Michael Musto at the premiere of The Debt
Hitting a Take Shelter screening last night I tweeted "Okay, Jessica Chastain. Show me what else ya got" Of her three summer performances (her fourth The Debt opens soon) it's the least impressive but it's almost the most telling. 'What I got' was the surest indication yet that she's a future Oscar winner as she embraced their favorite role, the long suffering wind-beneath-her-husband's-wings type, with such unfussy naturalistic ease.
Regarding Oscar...
While she's ethereal and lovely in The Tree of Life it seems less an acting feat than a well judged minimalist act to allow Terrence Malick and Emmanuel Lubezki's camera and the rich scoring to fill her Way of Grace with meaning. Auteur vessel performance are rarely nominated. While she's hugely entertaining in The Help she probably has too much internal competition for traction. And her most Oscar-friendly role in Take Shelter is within a film that one suspects will be too under the radar for Oscar. She may have to wait for the Kodak theater but it'll be exciting to watch her work her way there.