[TeamViewer – Free Desktop Sharing and Remote Control][1]:

Instantly take control over a computer anywhere on the Internet, even through firewalls. No installation required, just use it fast and secure.

Nice nice nice nice nice – I really could have used this earlier today trying to help troubleshoot a problem with someone’s email setup 1000 miles away. (Sorry Smythe!)

[1]: http://www.teamviewer.com/index.aspx