Electronic Cigarette
http://www.blucigs.com/index.php
^discuss
Was just surfing the net when I came across these bad boys.
Personally I reckon it's kinda shifty but a great alternative if you don't want to smoke real cigarettes. If it actually works.
Apparently it actually looks and tastes the same as a real cig...just without the tar and tobacco and all the shit that is in a conventional cigarette.