This article tells the story of the THC orange developed (and quickly shut down) in 1998. I heard about it then but I suspected it may have been a hoax. I was wrong. This article is timely too since it comes right on the heels of the announcement of the Genetically Modified Marijuana Food Prize I posted about earlier.
http://findarticles.com/p/articles/mi_m2342/is_2_33/ai_59586992/print
And search for Nanofsky