EFF-sponsored anonymizer
According to this press release, The EFF is sponsoring the TOR project.
If you're not familiar with TOR, it uses a concept called "Onion Routing" to forward TCP traffic from your computer, though a complex series of semi-anonymous hops, and finally to the packet's ultimate destination. The idea is that you can run the TOR client on your computer, which exports a SOCKS proxy interface. Then any SOCKS-compatible application can use the proxy to route it's traffic through the onion network.
Check it out, it's super cool, and free (as in speech AND beer), so you have nothing to lose.
I love the EFF!