Here's a list of useful links including a range of useful tools and tutorials, including using Node.js with Backbone, three videos, and HTML5 audio.

Instagrams Android Node.JS Push Server

https://github.com/Instagram/node2dm

Node.JS with Backbone

http://dailyjs.com/2011/04/04/node-tutorial-19/

NowJS Framework for Node.JS

– very nice for doing somethings really easy like infinite scroll..
http://nowjs.com/examples/scroll

Socket.io  Node.js Client to Server with Express

http://delog.wordpress.com/2012/05/11/socket-io-node-js-client-to-server/

Node.js Videos

http://www.nodejs-news.com/nodejs-tech/Cool-nodeJs-videos-1/
http://www.nodejs-news.com/NodeConf/build-javascript-html5-game/
http://www.nodejs-news.com/NodeConf/mojito-multidevice/ 

In-Browser Notifications (Node.js, Faye, HTML5)

http://android.konreu.com/technologies/real-time-in-browser-notifications-with-node-js-and-faye-html5-websockets/

http://chemicaloliver.net/programming/creating-a-remote-webcam-using-nodejs-android-opera-mobile-web-sockets-and-html5/
http://francisshanahan.com/index.php/2011/stream-a-webcam-using-javascript-nodejs-android-opera-mobile-web-sockets-and-html5/ 

HTML5 Meter Tag

http://html5doctor.com/measure-up-with-the-meter-tag/

HTML5 Audio

http://html5doctor.com/html5-audio-the-state-of-play/

Intro to Node.JS Video

http://code.danyork.com/2011/03/22/video-intro-to-node-js-by-ryan-dahl-at-sf-php-meetup-on-feb-22-2011/

HTML5 Bomber App

node.js socket.io Backbone + Underscore JQuery CSS3
https://github.com/cri5ti/html5-bomberman

Node.JS Resources

https://github.com/joyent/node/wiki/Resources

Mixu’s Node Book

http://book.mixu.net/single.html

Summer Jobs API

http://developer.dol.gov/DOL-SUMMERJOBS-SERVICE.htm

CMS using Node.JS and Mongodb

http://calip.so/
http://calip.so/quickstart-install-calipso.html
http://calip.so/calipso-site-modules-themes.html
http://dailyjs.com/2011/05/23/code-review-calipso/