Thermoworks: The only instant read thermometer you will ever need.
The BBQ Guru: Automated vent control and heat management for your smoker. God Bless these great folks!
Smoking Meat Forums: Great bunch of folks and an incredible source for BBQ information.
Weber Virtual Bullet: The premier spot to understand your Weber Bullet
Cajun Bandit: Weber mods, including a kick-ass stainless steel door for your WSM.
Brinkman Smoker Mods: Tips and tricks to make your Brinkman Smoker into a real bang for you buck!
BBQ Brethren: Another very good BBQ forum full of carnivores
CBBQA: California BBQ Association
KCBS: The leading BBQ Association, they set the standards for the “major-league” bbq cookoffs.