Applegate is a fan favorite outside The Late Show with David Letterman studio in New York City. Plus: Harrison & Calista, Nicole & Joel, Mary-Kate Olsen and more

CROWD PLEASER

Samantha Who? star Christina Applegate makes her mark with fans outside New York's Ed Sullivan Theater on Monday before an appearance on The Late Show with David Letterman, set to air Wednesday. The actress's ABC comedy returns Thursday.