It seems that Scientists are becoming too busy....now they are trying innovating with the hair styles and growing hair...the Project involves billions of dollars and dedicated Phd holders working on it.....they have tried to get hair growth using Transgenic technology...only thing is that they are trying this in Cactus and not on Humans....
The opening page of their project says this:

"We are so used to this world that we cannot see its perversion anymore.Ofcourse this will seem perverted..."

The cactus project is a transgenic "artwork" (emphasis added) involving the fusion of human genetic material into the cactus genome resulting in the cactus expressing human hair. The cactus project involved the use of the agrobacterium system introducing the keratin gene into the cells of the cactus. By taking advantage of the totipotency of plant cells, the transformed cells were used to regenerate genetically engineered transgenic cacti. The logistical challenge was having the keratin expressed in cactus cells morphologically similar to hair and for the cactus to produce it externally.(Via Cactus Project)
You can see the pictures of haired cactus in their site too....I don't essentially know the immediate use of this research...but I am sure, this might be a small step in a long march...