Emmy Rossum and Adam Duritz hanging out in Washington Square Park on Saturday ... Leighton Meester and Sebastian Stan kissing in the street in front of Five Points ... Hugh Jackman playing in the snow with his kids as Cate Blanchett's sons played nearby ... Rachel McAdams walking with Jude Law's assistant, Ben Jackson ... Sarah Jessica Parker and Matthew Broderick walking home from a play ... Ed Westwick shopping at Armani Exchange ... Sienna Miller walking downtown ... Catherine Zeta-Jones leaving the Walter Kerr Theater on West 48th Street ... Howard Stern and wife Beth Ostrosky watching a Knicks game at Madison Square Garden ... Amanda Seyfried walking her dog in the meatpacking district ... Britney Spears and boyfriend Jason Trawick arriving at JFK ... and Jamie-Lynn Sigler and Lance Bass taking a stroll in the meatpacking district.