30 Days gives such a great amount of DESPERATELY needed information to the public that they really don't notice. Take the coal mining for example, people are "totally against" coal power and the people who make a living mining it, yet they use their computers, iPods, cellphones, and everything that is more than likely powered by coal. There are the Christians who assume Atheists are all immoral, and the Atheists who believe that Christians are all narrow-minded, whereas the religion episode brings up great points showing the differences and similarities.
I really enjoyed the Guns episode (Mostly because I was WORKING at that gun show, and found out about a year later when I saw the episode, which was really freaky) because it showed that most "Pro-Gun" people are NOT the ones who go around shooting irresponsibly, but take precautions and care, and have the same right to their beliefs as the Anti-Gun side.
Really helps debunk myths. EVERYONE should watch this show, no matter what side of an issue you are on. It's an entertaining and fact filled show that helps reveal what is real, and what is assumed.
Ignorance hurts society, which is why this show is a much-needed breather in a world of the media saying what is "Right and wrong" and what is "cool and uncool."