Microsoft and Apple have an interesting relationship!
If Microsoft did not create Office for the Mac, it is not clear if Apple would be enjoying the growing market share for its Macbooks and iMacs. If Microsoft did not invest in Apple a few years ago, despite being the "evil monopoly", would Apple have been in trouble?
Today, even as the Microsoft Zune continues to (try to) compete with the iPod, and there are rumors of a Zune-based phone to compete with the iPhone, Microsoft announced availability of its first iPhone app, SeaDragon, at the iPhone App Store. This application allows iPhone users browse super-large giga-pixel images on an iPhone screen. Users can zoom way out or zoom way in, and access their Photosynth photos.
It will be interesting to see when the Microsoft applications show up on the Android market.