Mandi Bierly
March 05, 2010 AT 05:35 PM EST

To quote EW’s Oscar expert Dave Karger, Mo’Nique is “the mother of all locks this year” to win Best Supporting Actress. In advance of Sunday’s Academy Awards and the March 9 DVD and Blu-ray release of Precious: Based on the Novel ‘Push’ By Sapphire (nominated in six categories, including Best Picture), we’ve scored this exclusive featurette clip of Mo’Nique and director Lee Daniels discussing her casting — and which one of them was nervous about her playing an abusive mother.

More Oscars coverage:

Dave Karger’s OscarWatch blog

Who will win 10 big categories — and who SHOULD

EW’s Oscars Hub

Sandra Lee’s Best Picture nominee-inspired cocktails

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