if you want to see some videos about war driving and such check out
www.thebroken.org pretty cool video clips. as for people with wide open wireless connections i feel they are fair game, depending on what they are being used for general surfing and email and such, i dont really see any harm in that, but d/l porn warez and that kind of stuff isnt really cool. although a freind of mine who went up to toronto for school and ordered a dsl connection to his appartment lived off a neigbouring business wide open wireless network for 3 weeks until his dsl was hooked up.
on another note a local computer shop in my home town has wardriven the entire city and put a map in his shop of all the wireless hotspots all over town, most of them being government.