Kurt "CyberGuy" Knutsson explores how you can help troubleshoot a computer issue remotely on Windows or a Mac. There are a variety of options.

Because I have a little too much free time while visiting family right now, I'm attempting to get reach the GUI of a Mac (running Leopard) that I can normally access via Screen Sharing when I'm at ...

You can remotely control another person's iPhone, iPad, and Mac using FaceTime. This requires you to use Facetime's screen sharing feature and request control of the other person's device.