You want a “Star’s Most Embarrassing Moment” story? Filming a scene with Al Pacino on his new flick “Simone,” Rebecca Romijn-Stamos — who towers over the veteran star — was fighting a cold. Suddenly, to her eternal horror, Rebecca’s nose dripped unexpectedly and. . . PLOP! A big gob of goo splattered down on Pacino’s face! The director yelled “CUT!” . . . frenzied staffers screamed for tissues . . . red-faced Rebecca blubbered profuse apologies . . . and Pacino? He just stood quietly, frozen but patient, until his dignity and his makeup were restored!. . . And how was YOUR week?