In my opinion the coolest feature that is part of Android 2.2 (Froyo) is the ability for information to be pushed from the web to the mobile phone. This is the underlying technology that will enable us to browse the Android Market in a web browser on a PC for an app, click Install, and have the installation of the app automatically start over the air on the phone. If you have Android 2.2 installed on your phone you can use an implementation of this capability right now to send the URL of a web page that you have open in Google Chrome on a desktop to your phone.
Unfortunately, this functionality only works with Google Chrome. It requires installing an extension in Chrome and an application on the phone, both of which you can find on the chrometophone web site. The Android app is not in the Android Market, so you need to enable your phone to install apps from unknown sources by tapping Settings, Applications, and checking the Unknown Sources checkbox. You then need to run the Chrome to Phone app to register the phone to the Google App Engine server hosting the service.
The Google Chrome extension adds a button with a phone icon to the right of the address bar, and you click the button to send the URL of the page that is currently open to your phone. A few seconds later you will see a notification on the phone, which you click to open the page. There is a setting in the Chrome To Phone Android app to automatically load the web page rather than just provide a notification, but I prefer to receive the notification.