Democratic presidential candidate John Kerry will visit the Late Show with David Letterman on Monday, Sept. 20.... Fox is producing a live-action Alvin and the Chipmunks movie.... Entertainment Tonight correspondent Maria Menounos is joining One Tree Hill for eight episodes. She'll play a love interest for Keith (Craig Sheffer).... America's Next Top Model's Tyra Banks has inked a deal with Warner Bros. to host her own daytime talk show, the New York Post reports.