SunTrust and BB&T team up to create the 6th-largest bank in America.  Bill Mann analyzes the deal and shares why he’s optimistic about the combined entity’s future. Plus, we discuss Twitter’s 4th-quarter disappointment and Chipotle’s surprising comps growth in its own 4th quarter. Thanks to LinkedIn for supporting The Motley Fool.  Go to https://www.linkedin.com/fool and get $50 off your first job post.