You can use the SSH connection as a SOCKS proxy:

• $ ssh -D 8080 localhost -p 8765
• Then set your browser to use port 8080 as a SOCKS5 proxy.
• The interweb!

Or setup a SOCKS proxy on your 'proxy' host and tunnel directly to it with:
$ sudo ptunnel -x mypassword -p myproxy -lp 8765 -da localhost -dp 8080

My setup:

Router at home (Linksys router with OpenWRT firmware)

• cronjob to update my dynamic dns record 'proxy.mydomain'
• # ipkg install ptunnel
• # ptunnel -x mypassword -f ptunnel.log &

On client system (Debian)

• $ sudo aptitude install ptunnel
• $ sudo ptunnel -x mypassword -p proxy.mydomain -lp 8765 -da localhost -dp 22
• $ ssh -D 8080 localhost -p 8765
• Install FoxyProxy extension in Firefox
• Configured SOCKS5 proxy: localhost:8080

You can use ssh tun features over icmp tunneling, for having unlimited access to the intertubes!

Look up the -w option in ssh(1) and PermitTunnel in sshd_config(5). You of course have to take one minute to set up routes etc, but the result is that you say goodbye to proxies, socks and all that cheesy setup.

Have fun. Steal much.