PortableTor is a convenient package for anonymous web browsing. It uses Tor, a virtual network that allows you to surf anonymously. It also contains Vidalia, which is a GUI controller for Tor, and Privoxy, which is a HTTP/HTTPS proxy server. With these components working together, you simply need to configure your web browser to use Privoxy as the proxy server and you will be able to visit web sites with complete privacy.
