"The Year With Katie Couric" - a collaboration between "20/20? and People magazine - reviewed all of 2012, from the biggest news stories like Newtown and Sandy to guilty pleasures like "Gangnam Style" and "Call Me Maybe." Celebrity marriage, breakups and babies - and feuds - also made appearances. Social media's effect on politics and pop culture was another focus.

Watch all these stories and more by clicking on the videos below.

Celebrity Romance - Jennifer Aniston and Justin Theroux got engaged; Tom and Katie split; Jessica Simpson had a baby. Here, the weddings, babies and breakups of 2012.

Dishonor Roll - John Edwards, Lance Armstrong and David Petraeus made headlines for all the wrong reasons. Celebrities who appeared in mugshots, not vanity shots, included Shaun White and Lindsay Lohan.