Google Pack (http://pack.google.com/) is a free software you can add to your Desktop PC, it includes the following:

1. Google Photos Screensaver: A screen saver that can show images from your local desktop images, Picasa Web Albumes, or any photo feed from the Internet. This is really amazing, while your screen saver is working, you can watch the latest images of your relatives and friends.
2. Norton Security Scan – Security utility
   SymantecDetects and eliminates viruses and internet worms
3. Spyware Doctor Starter Edition
4. Picasa
5. Google Earth
6. Google Toolbar
7. Google Talk
8. RealPlayer: a simple and fast edition without annoying ads
9. Skype – Voice, video and chat
10. Google Desktop Search

Goolge have at tool to enable you installing, updating, or removing any software is fun. what is amazing for me a previous Web developer is the integration between that desktop installer and the web site. When you click on Google web site application, the local desktop application will automatically start to download and install it.

Have a look at http://pack.google.com/