Toni Collette, United States of Tara

Showtime's new series, United States of Tara, doesn't premiere until Jan. 18, but now's your chance to watch the full episode online before it airs!

From executive producer Steven Spielberg, the comedy centers on working mom Tara (Toni Collette), who just so happens to have three other personalities living inside her. First is the Betty Crocker of the bunch who goes by Alice. Then there's Buck who loves the three B's: beer, bar fights and boobs. And last, but not least, is T — the wild child who loves showing off her cleavage.

Click here to watch the full premiere episode now!