David Gillespie has also done a lot of research into vegetable oils and has some interesting posts:
http://davidgillespie.org/category/vegetable-oils/

I think he also wrote a book on the subject. Ahh, here it is:
http://davidgillespie.org/portfolio/toxic-oil/

I don't agree with everything the man says, but he has done a lot of research and come up with some very interesting data and talking points.

My body definitely reacts differently to foods cooked in vegetable oils vs foods cooked in butter/lard/bacon fat/coconut oil/etc. This is one of the many reasons I almost never eat out because pretty much no-one cooks in the good oils anymore. :/