The singer has fun at a Nickelodeon show. Plus: J.Lo & Marc, Jake Gyllenhaal and more

APPLE OF HIS EYE

With wife Jennifer Lopez by his side, Marc Anthony gets the crowd on its feet Wednesday after his performance at New York City's Madison Square Garden. The singer has been on the 20-city Juntos en Concierto tour with fellow Latin pop artists Marco Antonio Solis and Laura Paulsini.