Maiken Scott reports on a pharmaceutical company using genetic testing to improve responses to anti-depression medications.  Kevin Tofel of gigaom.com reviews the latest offerings in the tablet market.  Peter Crimmins visits a North Philadelphia mural that, when finished next week, aims to help revitalize a retail corridor.  Frank Newport, Editor-in-Chief of the Gallup Poll, reveals what's on Americans' post-Thanksgiving minds. Kevin McCorry talks with Black Friday shoppers and avoiders.