Virtual Percussion for Frame drums
I learned about this site from the Framedrummer listserv at Yahoo. Pascal Fricke created these virtual drums (made with shockwave), that play the various tones of the drum as you move your mouse around. A virtual tonbak, a virtual Darabukka, Tar, Bendir, a virtual Ghatam, Riq, Marocan Derbouka and Turkish Darabukka. It's really cool, especially to demo a drums sound to someone when you don't have your drums available.
Also, while you're there check out Pascal's Music.