Ever wanted to use a Wii Remote, pheraps a Multitouch surface or the Microsoft Kinect to control your application/game even if web based? If so, then MonoMIG (Multi Input Gateway) is what you are looking for!
Javascript SDK for Nintendo Wii's Opera browser with classes for 3D vertex math, triangle meshes, canvas drawing, Wii Remote motion/button detecting, and multiuser interfaces. Official site: http://wiioperasdk.com and blog: http://blog.wiioperasdk.com.