These days it seems like the Internet is connecting everything to everything else. So it follows that you should be able to connect to your home computer whether you're home or not. And so you can. Gotomypc.com has been the gold standard for remote access software for some time now. But there's a new challenger out there, MyWebEx.com.
The Webex people are known for creating a web conferencing service, which connects any number of computers together for training, presentations, sales meetings, collaboration, etc. Since they do a good job of web meetings, it follows that it should be a piece of cake to use that same technology to allow you to connect to one computer with another.
I've been a GoToMyPC.com fan for some time. Unfortunately, my firm's web filter now blocks access. But they haven't found MyWebEx.com yet. (Shhhhsh...don't tell.) MyWebEx.com works just like GoToMyPC, but there's one big difference...it's free. At least for now.
MyWebEx.com isn't all goodness and light, at least not for me. The plug-in seems to be crashing my computer upon shutdown. But that's a small price to pay for free remote access.
For more information see: WebEx Readies Remote Access App.
[Spotted on TVC Alert.]
You should check out TightVNC it runs as a service on your home computer and eliminates the need to have an account with any of the providers out there.
http://www.tightvnc.com/
You then have the option of using a browser to view your pc or any vnc client to use your whole desktop. The advantage of the latter is that you can view it in full screen and it will really feel like you are using your home computer.