Just ask Siri to book restaurants, movies, taxis and more (built for 3GS phones and works only in the US).

This is another innovative approach to search. Siri attempts to listen to what you say and carry on a conversation with you. The speech recognition is really good. Apple should buy this technology and build it into the OS.

This little application really shows you the power of that hand-held computer with the little fruit icon on the back. You can record a little audio and have it automatically convert it to text. It uses the Dragon® Naturally Speaking® engine to achieve amazing results. Once you have your text on the screen you can copy it to another application and save yourself the trouble of typing it in. It has quick buttons for text messages and mail. You can get to any other application via the clipboard. This is the kind of tool that really needs to be part of the OS.