Because "Best of" lists are what you do at the end of the year...
The Royal Town Planning Institute's Highlights of 2012 includes a podcast of the Nathaniel Lichfield Lecture delivered by Mitchell Silver, President of the American Planning Association.This is required listening for every urban planner out there. It's so good, I'm saving you the trouble of looking for it: just click here.
Architizer's The Year in Architecture: Best Buildings Of 2012 is a great round up of the year in building design.
BLDGBLOG's Books Received 2012 is a good reading list focussing on landscape, spatial science and the built environment generally.
If podcasts and books are too much for you, just follow Planetizen's Top Twitter Feeds 2012 on planning, design and development because 140 characters cannot be that much effort.
Wishing you a healthy and productive 2013.