It seems there is a general consensus that meat, milk, celery, strawberries, blueberries, grapes, peaches are riddled with pesticides and hormones while other foods don't matter as much e.g. pineapple, avacados, onions, etc.
I totally believe this is the case for celery, as just about all organic celery I buy has bugs which makes me thing they must spray the crap out of the regular variety. I am fine with the bugs, I just inspect first and wash them off.
I don't know for sure but I am also guessing that it really doesn't matter with blackberries. I believe this because I had the most the most prolific, luscious blckberries bushes in the yard and I eat the berries all summer without bugs attacking them. It always surprises me because they are so juicy and sweet. I think most of the small bugs have a hard time getting through the coating on the seeds. The only thing that seems to ever get them are large ants and only when the berries are broken.
I swear that some organic food really tastes better. I would say milk is one of those. Then again other ones can sometimes be infested with bugs.
whatsonmyfood.org has pretty interesting breakdowns of specific foods. I also got the following guide from

::READ PDF::

I think the difference in taste is real but it is also an artifact of how long the produce has been stored till it gets to you.
If it is organically farmed, the sellers KNOW that the shelf-life of the produce is going to be low so it gets from the farm to your hands in far less time than produce that has been grown with pesticides.
The real comparison would be to taste both kinds of produce after an equal period of time off the farm. I would be interested in opinions from that comparison.
i can say i used to think it was all hogwash. then, i tried local organic strawberries and they were orgasmic -- THIS is what food is supposed to taste like!!
I agree with you Paul. I think that the organic chicken is much better then the regular pack. It has more flavor and keeps moist longer.
I definitely think that organic makes a difference for fruit, especially strawberries, peaches, nectarines and apples. I've noticed less of difference in vegetables.