I used to use a Microsoft Wireless Mouse 3500. It was small, it made an annoying clicking noise- why put up with that? I couldn't find anything acceptable to replace it. I just wanted a plain black mouse. No frilly colors or designs. Then I tried using my iPhone as a wireless mouse. It works better than any mouse I've ever owned in my life. And then the thought came to me. Why am I using an old fashioned mouse when the iPhone is so much better? It's feels so natural. It not only replaces the mouse, it also replaces the track pad. The precision is crazy! I can navigate around Windows 7 like never before. You get all sorts of multitouch gestures- it's actually the best mouse I've ever owned. It's effortless. It's one less thing I need to carry. It almost makes me feel like I'm using a touchscreen laptop. And what's more- what mouse can play music???