Sorry, couldn't resist. Bestbuy lists the new 24mm lens twice as a 2.4mm. Now THATS wide angle.
http://www.bestbuy.com/site/Canon+-+EF2.40+mm+f/1.4+Wide+Angle+Lens/3900242.p?id=1218441028899&skuId=3900242
http://www.bestbuy.com/site/Canon+-+EF2.40+mm+f/1.4+Wide+Angle+Lens/3900242.p?id=1218441028899&skuId=3900242