(In no particular order...)
SoDA Blog - focusing on leadership ideas and opinions in the digital agency arena. The most creative people on Earth are involved with SoDA--shouldn't you spend a moment to learn about them??
The Customs & International Trade Law Blog - written by my colleague and friend Peter Quinter, one of the foremost authorities on Customs and Trade law, and a partner at GrayRobinson in Fort Lauderdale, Florida. If you're interested in Customs, Homeland Security issues or related topics, you don't want to miss his blog!