WotC held a "round table" Dungeon Master advice session live via video a couple of days ago. Shelly Mazzanoble, Trevor Kidd, Rodney Thompson, Mike Mearls, Sarah Keortge, and Chris Lindsay answered questions from viewers. The session was recorded; watch it below! The video is over an hour long, so prepare your beverage of choice in advance! "We gathered a select group of Dungeon Masters from around the office to answer questions from the D&D community and provide tips and tricks for all DMs!"
[video=youtube;k1MjDesszr8]https://www.youtube.com/watch?v=k1MjDesszr8[/video]
[video=youtube;k1MjDesszr8]https://www.youtube.com/watch?v=k1MjDesszr8[/video]