Warren Miller's Dynasty -- the latest in a sixty-year dynasty of feature-length ski films that is still inspired by, if no longer helmed by, the octogenarian filmmaker and snow-sports enthusiast -- arrives tonight at the Somerville Theater and moves to Berklee Performance Center over the weekend. "The featured skiers, who plunge down perilous
ravines to the pulse-pumping soundtrack," writes Tom Meek in his review this week, "are a breed apart, fearless
and seemingly locked into a state of permanent nirvana