Cake

Claire Simmons (Jennifer Aniston) is in pain. Her physical pain is evident in the scars that line her body and the way she carries herself, wincing with each tentative step. She's no good at hiding her emotional pain either. Blunt to the point of searing insult, Claire's anger seethes out of her with nearly every interaction. She has driven away her husband, her friends - even her chronic-pain support group has kicked her out. The only one left in Claire's otherwise solitary existence is her housekeeper-cum-caretaker, Silvana (Academy Award nominee Adriana Barraza), who barely tolerates her boss' need for liquor and prescription pills. But the suicide of Nina (Academy Award nominee Anna Kendrick), one of Claire's fellow chronic-pain group members, prompts another fixation. In pursuing questions about the death of a woman she barely knew, Claire explores the boundaries between life and death, abandonment and heartbreak, danger and salvation. As she inserts herself into the lives of Nina's husband (Sam Worthington) and the son Nina left behind, Claire just might find salvation.

This was easily the most different and impressive performance from Jennifer Aniston.  She was an emotional wreck and her demeanor/behavior would do 180's left and right.  The best part of the movie was the way that everything was told.  You got info on what the main character had gone through to become like this in pieces and it was distributed to you so well that you became more and more invested in the character's processing of her life events.

I would definitely recommend people checking this out.  It really was an excellent performance.