Toni Collette is back in full force once again with the second season of 'The United States of Tara' (premiering tonight on Showtime at 10:30), in which she plays Tara and all of her alter egos, thanks to a nasty case of multiple personality disorder. Toni was kind enough to come to the PopEater headquarters to chat about all things 'Tara.' In part one of the interview (below), Toni discusses what's to come in the show and what all of the characters mean, and in part two (after the jump), what caused her to move to television and the biggest challenge of playing Tara.

PRODUCTION PLAYER! DO NOT DELETE.