Our movie critic's weekend selections

Lambert & Stamp. Essential viewing for fans of The Who, the wild, woolly British Invasion band fronted by Pete Townshend and Roger Daltry. But more than that, director James D. Cooper's remarkable portrait of the mismatched duo who guided The Who to stardom - Kit Lambert and Chris Stamp - opens the window on a pivotal time in 1960s (and early 1970s) pop culture. It's a revelation. R

Clouds of Sils Maria. Juliette Binoche and Kristen Stewart star, respectively, as a famous actress in midlife (and still, she hopes, in mid-career) and her personal assistant, half her age, restless and bright. As Binoche rehearses a new role in a hideaway in the Swiss Alps, Stewart's character takes on the other part, and the women's relationship begins to mirror the one they enact. A meditation on memory, on growing older, on the life of the theater and the theater of life. From director Olivier Assayas. R

Iris. Albert Maysles' winning portrait of Iris Apfel, the free-thinking nonagenarian New Yorker whose uncanny sense of style has inspired several generations of fashion-world movers and shakers. "Less is more" is definitely not this woman's credo. PG-13