Academy Award-winner Morgan Neville and Grammy Award-winner Robert Gordon talk about directing “Best of Enemies,” a film about the acidic feud between William F. Buckley and Gore Vidal that took over the American television and imagination for a short time in the 1960s. Event Robert Gordon will be holding Q&As at the IFC Center on Fri Jul 31 at 6:20 & 8:25, and Sat Aug 1 at 2:15