Though visitors won’t find many remnants of the classic, old-world-­Jewish Lower East Side dining scene, there are a few stellar holdouts, among them the famous Katz’s Delicatessen, where Meg Ryan faked her famous orgasm in the 1989 Hollywood flick When Harry Met Sally, and where, if you love classic deli grub like pastrami and salami on rye, it just might have the same effect on you.