RTFA: http://www.theglobeandmail.com/servlet/story/RTGAM…

TSC Group, LLC, offers its NJoy electronic smokeless cigarette to health-conscious smokers who don’t want to quit.

The watch battery-powered cylinder, which looks similar to an ordinary cigarette – including an LED tip that flares as a smoker takes a drag – vaporizes a tiny packet of a nicotine and flavoured water solution, creating a heated mist that is drawn into the lungs.

What the smoker exhales is water vapour without the tar and other carcinogenic particles that come from burning tobacco, according to spokesman Matt Maher.

Last September, the World Health Organization in Geneva, Switzerland, said in a written statement that it knew of “no rigorous, peer-reviewed studies” that showed electronic cigarettes are safe or effective as a nicotine replacement therapy.

The NJoy starter kit costs about $80.

This article actually reviews a bunch of interesting new gadgets, but the nicotine vaporizer seems like it has the greatest potential to do good. One of the comments to this article noted that a New Zealand study had indeed found a nicotine vaporizers are a much safer alternative to cigarettes: http://healthnz.co.nz/RuyanCartridgeReport21-Oct-08.pdf