Trader Joe's anyone?

Have any of you ever been to Trader Joe's?  I saw this 'unofficial' commercial for them a while back and I've also heard some good things about their products/store.  It looks like a very interesting place and since they opened a Trader Joe's in my state last year, I have been wanting to go there.

I want to start eating healthier and I'm interested in learning more about all-natural and organic food.  I was just reading about grass-fed beef and how much better it is for you, as well as free-range chickens and turkeys. I am clueless about this stuff so I'm going to do some more reading about it to learn more.  I also want to take a trip to Whole Foods to see what they have there.  As I've said before, I'm always up for trying new things, but I definitely don't want to get started with buying organic foods if there truly isn't much of a benefit to it.  Any wisdom or advice for me?  :)