Forget the old days of calling the operator or 411 for a businesses phone number. Call 1-800-GOOG-411 to get connected with local businesses or to get directions to your favorite restaurant. For full details of what you can do with this visit the Goog-411 page.
You can send a text message from your phone to 46645 or G-O-O-G-L and type weather followed by your zip code to get current weather information. For many other uses of this service such as movie times, addresses, stock quotes, etc. visit Google SMS.
On most cell phones you can press the send button to bring up a list of recent calls. Highlight a number in the list and press send again to make the call. This makes it quicker to return a call.