“Part 2” more or less picks up where the last movie left off, with Katniss and the rest of the rebel forces closing in on the government and Panem’s leader, President Snow (the invaluable Donald Sutherland, leading with an insouciant self-amused smile). There are no real surprises, though many familiar faces, some of whom (Jeffrey Wright and, more movingly, Philip Seymour Hoffman) flash by so quickly that they feel like guests who have popped in only to say goodbye. As with a lot of contemporary franchises, this one stocked the supporting roles with veterans who have given ballast to a largely unmemorable young cast, including the insipid twosome — Josh Hutcherson as Peeta and Liam Hemsworth as Gale — who have wanly bookended Katniss from the start.