What would you do if you found an open wireless router accessible from your house? I've already gotten into the router (the idiot didn't change the default password!) but I really can't do much in there except access Netgear's basic logs and change the password. I can see his two computers, but can't access them. Anyone know of anything malicious I can do? I'm bored.

I can't send any 'net send' commands, but I'd love to bug him. Maybe all I can do is constantly drop is IP lease and piss him off, but surely I can do better than that!

And no, I can't just go tell him it's open... there are 6 networks visible from my living room and I don't know which neighbor it is.