I've never been a Meryl Streep fan but an excerpt from Variety might make me at least glance at the DVD version when it comes out:

Streep's Sister Aloysius is definitely "old school," a quality Flynn attempts to bring up to date, unfortunately in vain.

"She's a classicist," Shanley explains. "She's somebody who's read Plato, who's thought about the Greek city-states. She has an educational philosophy, is a serious person and isn't there to be liked but to get the job done."


Meryl Streep, 'Doubt' (Variety)