Richard Corliss
Knightley embodies Anna as a girlish woman who has never felt erotic love; once smitten, she is raised to heavenly ecstasy before tumbling into the abyss of shame. It's a nervy performance, acutely attuned to the volcanic changes a naive creature must enjoy and endure on her first leap into mad passion. She helps make Anna Karenina an operatic romance worth singing about.