1 and it's all I need and want to manage.  I hate laptops anyway.  My desktop is my gaming and primary pc.  I can also use FIOS media manager to share out to the various tvs in the house.  It's easy and free, though the quality is not the best.  Otherwise I netflix through ipad / smartphone.
BTW, I need to point back to this thread the next time someone argues "do you really need a nice purse, fast car, etc.".  Look at all the extras when it comes to tech toys.