Slides for WDCNZ 2011
I didn't get to go but here are all the links for the slides I could find on twitter.
HTML 5 For Humans by Paul Irish (link missing)
The Forgotten Art of Web Performance by John Clegg
Preparation H - Treat your CSS with SASS & Compass by Jeff Wegesin
The Developer Experience By Pamela Fox
Web Security: Get A Head(er) By Kirk Jackson
File Upload Considerations By Kirk Jackson
WebSockets.open() By Jeremy Boyd
Apocalypse Node By Craig Walker
If you find anymore, please leave a comment with the link.