There are so many things the JWs spout off about that they say are "good" or "right" when the reality is completely opposite.
Morality is one, as already exposed nicely by Cantleave. Add to that they really aren't any more moral than the rest of humanity. Plenty of sex outside of marriage, lots of alcohol abuse, and I'm sure they watch plenty of porn on the downlow. Drug use is probably lower, but then again they lie about how much the world uses drugs.
Lying is a biggie with JWs, starting from the top down. When you lie about being God's mouthpiece, you pretty much lose any high ground when it comes to morality.