At the beginning of the month Google acquired GrandCentral. The service can be used to manage all of your phone numbers (cell, work, home) and consolidate them into a single number. On the web site, you are able to manage your numbers, forward them to specific umber, forward callers to voicemail (and listen to them while they leave a message, or even record them).
This is a great service, and with Google now running with it, we will see some amazing integration with gTalk or gMail. Throw in Apple’s iPhone’s voice mail technology, and we will no longer have to spend 20minutes waiting to hear our voicemail operator give us prompts and tell us how many message we have that are new, that are saved, and are marked to expire.