When speaking about Internet worms, I like to point out that my personal computer hasn't been connected to the Internet in years, at least not directly.
I've had a WiFi router connected to the Internet via my cable modem since late 2003, which provides me with a security benefit. NAT routers act like a hardware firewall. Only requested traffic makes its way to my PC.
So, no direct Windows connection to the Internet, no worms such as blaster to worry about.
However, these days, there's malware that tries to work its way through home routers.
At that's why I want to link to this story:
Including the ability to copy a configuration file that contains the administrative login and password in plain-text.