With all the negativity about JWs in this thread, I have to say I have neighbors who are JWs and they are absolutely the nicest and most decent people I have ever had living next door to me.
The Savior said that the greatest commandment is to love thy God, and like unto it is to love thy neighbor as thyself. If other kinds of Christians followed this rule to the extent my neighbors do, the world would be a lot better place than it is.
MOST of the JWs I know are nice, honest people. But ALL of them have a blind spot when it comes to religion or church. They believe that The Church is THE MOST important thing in their lives, and will readily but church activities above family/friends/etc. Also, non of them that I know can explain much of anything when confronted by various contradictions in the Bible that don't agree with their beliefs.
My wife says that they are like the Borg (for you Star Trek fans). And like the Borg, each is incapable of individual thought. The entire goal seems to be to travel around and assimilate others, who then are made a drone of the "collective." It's actually a pretty good analogy. The next time you see a herd of JWs, just imagine them saying "You will be assimilated. Resistance is futile."