Sarah Michelle Gellar — once the young bintang of "Buffy the Vampire Slayer" — plays a political porn princess in Richard Kelly’s upcoming flick “Southland Tales" alongside Dwayne "The Rock" Johnson, and she seems quite satisfied with her down and dirty role.

“Looks can be deceiving,” the squeaky-clean starlet told us. “My character doesn’t seem all that smart on paper, but she knows what she’s doing. She has branched out into many different aspects of fame and is very successful. That’s definitely quite inspiring.”

So inspiring, in fact, that Sarah is joking about doing some...