Every Tuesday night this month, TCM presents movies starring Sidney Poitier, who was such a force and presence, especially during the 1950s and 1960s, that any sampling of his movies from that era is worth watching as an all-evening event. Today’s schedule, for example, features five films from a five-year span, at the start of the Sixties, and all deserve your time and attention. At 8 p.m. ET, the Poitier salute begins with 1961’s A Raisin in the Sun. Following that film: