Jailbroken iPhone 3G
Now, I can install a proxy and use the phone as a 3G modem for the laptop. That is pretty useful feature. Other goodies include a nice terminal and a demo version of quake2iphone.

See http://blog.iphone-dev.org/ and http://winpwn.com

Jailbreak and unlocking 1st generation iPhone using WinPwn at http://winpwn.com/

After getting off contract with AT&T, I checked online documents and tried out to jailbreak the first iPhone.
Loaded some nice applications and these are nice features Apple should not block for the users at all.

Anyway, this phone was sold on ebay at this list.