Rotten USA Tomatoes -- a mobile web app mashup with USA TODAY movie reviews and the RottenTomatoes.com API. Won the 2nd place Mashery.com award at MoDevEast Hackathon 2012.
More of a proof of concept than anything else.
Built using HTML5, JavaScript/AJAX/jQuery, SASS, and Ratchet. And panic (the emotion, not the software company).
View it on an iPhone here: http://labs.danielna.com/modev.