Why is the dollar falling?

I can't believe that the US Dollar is now Rs. 39.90... just a few years back it was Rupees 50 and then it stayed in the Rs. 44 - Rs. 47 range...

So why is the Dollar falling so sharply against the Euro, Pound, Rupee et al? Methinks its because Iran has been steadily selling oil in Euros; so many countries now need to hold less of the Dollar. Will this continue? it sure looks like it...

So what is the correct price of the Dollar? I think the Dollar still my fall another 12% - 14% in the next 12 months. After that it will stabilize as it will be at its correct level. Ofcourse many factors could derail this prediction, such as increased US exports due to weak Dollar, or Iran takeover Iraq style. But I think all this won't happen in the next 12 - 18 months, so here is to a cheaper holiday for us Indians to the US, Dubai (Duabi's Dhiram is linked to the US Dollar) and many other places.