There's A Mighty Wind a-blowin', along with the gales of laughter you'll get from Christopher Guest's third exercise in brilliant "mockumentary." After tackling small-town theatricals in Waiting for Guffman and obsessive dog-show contestants in Best in Show, Guest and his reliable stable of repertory players (including Fred Willard, Parker Posey, and Bob Balaban) apply their improvisational genius to a latter-day reunion of fictional '60s-era folk singers, a comedic goldmine that Guest first explored 30 years earlier on The National Lampoon Radio Hour. Collaborating with costar and cowriter Eugene Levy (who gives the film's funniest performance), Guest is so delicate in his satirical approach that the laughs aren't always obvious, and the subtlety can be as wistful (as in Catherine O'Hara's performance as Levy's auto-harpist partner) as it is hilarious. Some may wish for more blatant comedy, but that would compromise the genuine affection that Guest & Co. have for the music they're spoofing. --Jeff Shannon