Central Bank of Japan is the counterpart to our Feds. What Their Central Bank did a few days ago was very similar to what our Fed did late in 2008 and early 2009 which caused weakening of the dollar but a boom in the stock market that continues to this date.
I foresee similar situation for japan's stock market and japanese companies such as Sony.
But for Sony there is also their push into smartphones and tablets as well as their new Playstation.
Look forward for Sony to benefit from all the above for a long time to come. won't be surprised to see SNE hit triple digit within 1-2 years. Remember Sony, a giant company with over $82 billion in annual revenues, today has a market cap that is less than that of Nokia (wow!). And yet they are not just in smartphones but also in TV, movies, Playstation, Tablets, etc etc. Just their smartphone is so promising that last week CEO said he expects Sony to become one of the top 3 smartphone providers in the world.
All one needs is patience and not to be too greedy.