Starting right about now (9 a.m. PST, March 8th), we are running a contest to see who can come up with the best app using 100 lines of JavaScript and the ArcGIS API for JavaScript. You can also use 3rd party libraries. Official contest rules are here: https://github.com/Esri/100-lines-or-less-js
This has been planned to coincide with the dev summit but dev summit attendance is not required to participate.
I hope to see some contest entries from forum regulars!