At 40, Lopez balances motherhood, marriage, movies

** FILE ** In this March 30, 2008 file photo, Jennifer Lopez attends the premiere of "Shine A Light" featuring The Rolling Stones in New York. (AP Photo/Evan Agostini, file)

April 19, 2010 7:25:42 AM PDT
Two children and two years later, Jennifer Lopez has resurfaced with a "Back-up Plan."