TODAY 8a: What’s behind soaring gas prices? Celebrating 20 years of “Harry Potter.” Inside the making of “The Office.”

<p>Gas prices are up across the U.S. as millions plan to travel for the holidays — we tell you why they’re spiking. Plus, celebrating “Harry Potter” — today makes 20 years since the first film was released in the U.S. Also, inside the making of “The Office” and how it has inspired a new book, “Welcome to Dunder Mifflin: The Ultimate Oral History of The Office.” Erin McLaughlin chats with the authors, Brian Baumgartner and Ben Silverman.</p>