If you’ve yet to turn a cynical eye toward the holiday season, the Music Box Christmas Show should be right up your alley. For nearly 30 years, the Music Box Theatre in Lakeview has hosted this annual event, in which the historic movie house is transformed into a virtual winter wonderland. This year’s bill includes screenings of It’s a Wonderful Life and White Christmas. The films screen in double features, preceded by a group sing-along led by Santa Claus himself. Tiny Tim would be proud.