Oh, the nostalgia of drive-in movies. We love them — even in winter — and Big Picture Movies has a couple of feel-good family movies playing this weekend on the giant HD screen out at Redwood Acres Fairgrounds. Bundle up the snacks, blankets and kids and join Marty, Doc and the DeLorean and all your favorites in Back to the Future, playing Friday, Feb. 5 from 6 to 9 p.m. Then on Saturday, Feb. 6, laugh and cry along with Pixar’s sentimental and hilarious UP showing from 6 to 9 p.m. For everyone’s safety all cars are double spaced, and wearing a mask is required at all times when outside of your vehicle. Purchase tickets online in advance at www.bigpicturemovies.com (starting at $30).