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How do I route my internet through a SSH tunnel?

I just got a new laptop and put Ubuntu on it as a good way to force myself to learn Linux. This laptop will be going with me to school, work, the local coffee shop, etc. So I wanted a secure way to browse without pesky filters and worrying about the open wifi.

I setup a simple autossh script to run in cron on startup, but I want to route all my traffic, not just web traffic pointed to the local loop back. That way I don't need to worry about my chats etc. I've seen some other posts like this, but they had different requirements to meet, none of which I am limited by; so I'm curious if there is a better option then SSH (which seems to have quiet a bit of overhead).

So the question, what is the best option for tunneling all traffic (securely of course) from an Ubuntu desktop to an Ubuntu server? One preferably with an example ;)