Paparazzi GPS: Courteney Cox, David Arquette, Sarah Palin and More

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Take a look at some of your favorite celebrities out and about in this edition of GPS!
First up, separated coupleCourteney Cox and David Arquette were mobbed by photographers as they made a rare appearance together, leaving the Roosevelt Hotel in Hollywood last night. Also seen leaving the Roosevelt were 'Twilight' stars Kellan Lutz and Ashley Greene, who dashed into an awaiting car.
In NYC yesterday, possible presidential candidateSarah Palin greets fans and paparazzi alike as she leaves the FOX News building. Also spotted in NYC was Paris Hilton, who was greeted by overzealous onlookers while leaving the "Today" show offices.