For someone so lauded by such a large portion of conservative America, it's surprising there's been no feature film about Ronald Reagan in the 30 years since he took office. That vacuum -- coupled with the continued influence of the former president's policies and the ongoing invocation of his name in political rhetoric -- makes Eugene Jarecki's "Reagan" feel timely even though the late president had been out of public life since well before the beginning of this century. (It's also timely because, as Reagan supporters prepare to celebrate what would have been his 100th birthday in a few days,...