Over the course of the last few years, Showtime has been working hard to shed its image as HBO's nerdy younger sibling. Like a pubescent high school girl who's evolved from tentative nerd (Angela Chase) to popular ho (Kelly Taylor) to reckless bad-ass who just don't give a fuck (Marissa Cooper), we've seen the channel blossom before our very eyes. They brought us The L Word and Queer As Folk -- because it's natural to experiment. Then came Weeds --- because everyone knows that drugs make you cooler. Then came the much-anticipated Secret Diary of a Call Girl. Because everyone loves a slut. And just yesterday it was announced that the premium channel has picked up United States of Tara, a new comedy series penned by tattooed It-screenwriter Diablo Cody about a woman with dissociative identity disorder. Because if we learned anything from Britney, it's that mental disorder is the new black.