It’s Friday, when we talk about movies on the Takeaway. And today, rather than focus on a specific new release, we’re looking at the big picture. From silent films to youtube videos, from international cinema to Hollwood’s golden age, we’re going to try to cram in as much as we can. It’s all in honor of David Thomson and his new book, “The Big Screen,” which is both a history of, and valentine to, film.