Did you catch our HTML5 Rocks Live Hangout Yesterday? If not, we just posted the video with +Boris Smus, +Eric Bidelman, and +Paul Irish on the Google Developers YouTube channel.

+Paul Irish talks about using Chrome's developer tools to improve rendering performance at about 1:30.
+Boris Smus talks about his new device.js library for mobile development starting at 21:25.
+Eric Bidelman talks about his new idb.filesystem.js library starting at about 40:00.

Here's a list of all the links mentioned during the hangout:

02:15 Scroll Effects Demo http://goo.gl/h3jy5
23:04 - Media Queries Site http://goo.gl/rfQMa
24:15 - WURFL http://goo.gl/a8Sam
26:40 - Boris' Device Library http://goo.gl/yk9VK
29:28 - Device.js Demo http://goo.gl/0Mg92
33:25 - Bug to add touch-enabled media query to Chrome, please star http://goo.gl/1RXWs
35:00 - Chrome's DevTools for Mobile Development
38:56 - Paul Irish's Touch Demos http://goo.gl/Obi45
40:43 - File System API Book http://goo.gl/3hqfw
43:10 - Eric's idb.filesystem.js http://goo.gl/PVHRh
44:27 - idb.filesystem HTML5 File System Demo http://goo.gl/QTxoj
47:33 - HTML5 Filesystem Playground http://goo.gl/lYfEf
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