'Whatever You Like' by Anya Marina (original version by T.I.)

Hilary Duff, threesome and primetime TV aren't three phrases you'd expect to hear together often, but Monday night's episode of 'Gossip Girl' went there (sort of). Duff, who was introduced this season as Olivia Burke -- a movie star going to college with a handful of the 'Gossip Girl' regulars in New York City -- finds herself smooching both Penn Badgley and Jessica Szohr, who play Dan Humphrey and Vanessa Abrams. And that's about as much action as we see, until the camera later pans on the three sleeping in the same bed.

As hyped as the slightly racy episode was, what's more interesting was the song used in the scene: Anya Marina's cover of T.I.'s 'Whatever You Like,' a choice that was kind of edgy yet indie enough for the fictional NYU crowd of characters. "I love how much you learn not only about American culture, but hip-hop culture within that song," Marina previously told Spinner. "You learn about what [T.I.] values. There is so much passion there -- I love how open and honest he is, about his total carnal want for her."