We've covered our fair share of product recalls over the years, but this one almost certainly takes the cake when looking at pure zaniness. Canon has recalled its EOS Rebel T4i -- some 68,200 units -- "due to a risk of allergic reaction." You read that right. As the story goes, a chemical used in the camera's rubber grips "can result in a reaction that changes the grips from black to white and poses a risk of skin irritation to the consumer," and while the company has only received a single report of a consu
