Remember Naomi Watts’ drunken old Russian uncle in Eastern Promises? The one Viggo Mortensen crushes with one hard stare? That’s Jerzy Skolimowski, who directed this blithe but deceptive coming-of-age film about a teenager (John Moulder-Brown) crushing on his colleague at a municipal pool. Deep End starts as a comedy about the virginal kid’s puppy-dogging of the older, considerably more sexually experienced girl (Carnaby Street swan Jane Asher, a pal of the Beatles and supposed inspiration for “Here, There and Everywhere”). Some of the comic bits unfold almost in real time, like Jacques Tati gags, and there’s a hilarious Swedish sex-film-within-the-film that Michel Gondry would adore. But the off-kilter charm begins to darken as we see the kid from Asher’s perspective. She’s an ambivalent player in the sexual revolution, and he’s a grenade of pubescent frustration. (NR) Seattle Art Museum, 1300 First Ave., 654-3121, www.seattleartmuseum.org. $6-$8. 7:30 p.m. Also: Northwest Film Forum, www.nwfilmforum.org, 1515 12th Ave., 267-5380, Fri., Jan. 18–Thurs., Jan. 24. 7 and 9:15 p.m. BRIAN MILLER