Last month, we brought you the slides from Ryan Dahl's Node.js Roadmap presentation at the Yahoo UI Conference. The YUI team has thankfully posted the video in case you missed it. Brendan Gregg (pictured) also gave a presentation on Visualizations for Performance Analysis at the LISA '10 conference, which they have thoughtfully made available to the public with no need for registration. Of course, you can download those slides, too.