February 3, 2011 7:14 pm Leighton Meester: “The Roommate” is “Sexy” and “A Ride” The “Gossip Girl” actress talks about her upcoming film, in which she plays a mentally unstable roommate. US & World Videos 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 25:57 WATCH: ‘Changing Climate' highlights the Philly-area residents who are combatting climate change 2:36 Super dad makes Mario-themed obstacle course for son's birthday 4:17 How the Philadelphia Union became the sustainability champs of the MLS