Google has launched visually optimized search results that are designed to fit the screens of the iPhone and G1 mobile devices. With the new look, users shouldn't have to zoom in or scroll side to side.
The update was previously released on the iPhone, but only when you manually went to Google.com in the Safari browser. Now, for the iPhone, the new results page will appear when you use the default Google search box in the Safari browser.
For the G1, you can access the new results page after searching via the search widget on the Android home page or also through Google.com in the browser.
Here's what the new results page looks like: