Lea Thompson at the Boston Film Festival
The big star on tonight’s Boston Film Festival red carpet will be Lea Thompson, who young people know as one of the moms on ABC Family’s “Switched at Birth’’ - and the rest of us know as Marty McFly’s mom in “Back to the Future,’’ Amanda Jones in “Some Kind of Wonderful,’’ and Erica in the epic “Red Dawn.’’ Thompson, who will answer questions after the BFF screens her new movie, “The Trouble With the Truth,’’ says that more and more kids are familiar with her ’80s classics, much to her surprise. Thirty- and 40-somethings who grew up with the films are showing them to their children. And cable channels continue to re-air the movies. “It’s quite remarkable,’’ Thompson told us by phone, a few days before flying into town. Thompson is hopeful for a good crowd at tonight’s screening, mainly because she likes us Boston types. She was here in 2004 when the Sox won the World Series. Her husband, Howard Deutch, was in town at the time to direct the comedy “My Best Friend’s Girl.’’ “You could hear it from his hotel room,’’ she said, of our victory cheers. Thompson describes “The Trouble With the Truth’’ as an intimate film that features an intense back and forth between a woman and her ex-husband, who’s played by New Hampshire and Massachusetts native John Shea (Leighton Meester’s dad on “Gossip Girl’’). Thompson joked to us that she doesn’t worry about her “Back to the Future’’ audience seeing her play older characters like the one in “Trouble’’ because, thanks to time travel, they’ve already seen her as Grandma McFly. “They got used to seeing me older,’’ she said, giggling. “The Trouble With the Truth’’ screens at the Stuart Street Playhouse at 7 p.m.