For those that do not know, Web Essentials is... well I'll quote from the website
Web Essentials is the brain child of Russ Weakley, Peter Firminger of Webboy, founders of the Web Standards Group, and Maxine Sherrin and John Allsopp, of Westciv, Australian developers of world leading web development software. Long time advocates of standards based development and accessibility, they brought their strengths together in 2004 to put together something different - a web development conference "by developers for developers".
My point being you can download the audio from the conference and the speakers presentations for free. Let me suggest getting "Beyond Usability: Designing the Complete User Experience" from Jeffrey Veen. He is brilliant to listen to, some of the others don't have the entertainment value but their knowledge is well worth it.