One of my dozen reasons to watch TV this month [1], Showtime's The United States of Tara [2] sounds like a fascinating series. From Juno [3] screenwriter Diablo Cody, produced by Steven Spielberg, and starring Toni Collette, the show is a half-hour comedy about a subject that's not often fodder for yuks: multiple personalities.

Collette stars as a woman with Dissociative Identity Disorder, which causes her to experience life as a number of different people: Tara, the suburban housewife and mother; T, a flirtatious teenager; Buck, a gun-toting man; and Alice, a perfect '50s-style homemaker. This wreaks havoc — but, apparently, hilarious havoc — on Tara's husband (John Corbett) and their teenage children.

The series premieres Sunday, Jan. 18, at 10 p.m. — but there's no need to wait. Showtime's slipped me a copy of the first episode, and you can check it out right here on Buzz if you .

Photo courtesy of Showtime [4]