The Google Mobile app was the very first iPhone app that I reviewed on iPhone J.D. back in 2008. That app includes the useful feature of letting you use your voice to dictate your search terms and then have a search run. Very fast, very effective.
The latest update to Google Mobile adds the very cool Google Goggles feature. Take a picture of an object, and then Google does a pretty good job of figuring out what the object is and runs a search based on the picture. It works best with distinctive objects such as a landmark, a book cover, an ISBN number, a wine label, a DVD cover, etc. It can also read text.
Google put together this great video to show you how it works and why you would find this feature useful.
In my tests, when the feature works, it works really great. Google Mobile is free, so if you don't already have it, get it now so that you can try out this cool new feature.
Click here for Google Mobile (free): 
