TeamViewer teamviewer.com is a free VNC program ( control a remote machine from your machine), that is very easy to set-up and use.
Highlights are:
- Free for public use
- Cross-platform friendly (OSX and Windows, no Linux though)
- Breaks through firewalls
- Uses an uber-strong backbone connection, so less lag than a VNC that uses public networks
Specials shout to JMSTP for introducing me to it.