Today and tonight, TCM is devoting its schedule to Marilyn Monroe. This makes room for plenty of her classics, including 1956’s Bus Stop at 6 p.m. ET and 1953’s Niagara at 10 p.m. ET. But the real treat, leading off prime time, is 1955’s The Seven Year Itch, co-starring Tom Ewell. He plays a Fifties-era Madison Avenue advertising genius – a prototype for Don Draper of Mad Men, only frumpier – and she plays an apartment neighbor upon whom he projects his romantic fan