Does 2014’s Draft Day - starring Kevin Costner and Jennifer Garner - have the single greatest negotiation scene of all time? I’ll leave that judgement to history, but I will say that watching Costner’s Sonny Weaver Jr. parlay one first round draft pick into three key new players in the film’s finale is as electrifying as it is improbable, and it contains three useful lessons on negotiation for lawyers and lay people alike.