1. They have the largest moat ever, period!
No matter how much I love Apple, most people and businesses don't use it. Microsoft is still controls the PC market. Sure there are many open source operating systems out there, but they are so confusing to the average market to just install that they hung themselves into obsolescence. XP, Vista, and Office may drive you crazy sometimes but they are good pieces of software. I am on a Mac right now and many people like me are able to run and have installed Windows onto their Macs. This is proof that Microsoft is a necessity.
2. The Xbox 360 kicks ass!
I know all we hear about is the Wii, except for yesterday when Microsoft announced that its Entertainment and Device segment posted its first operational profit. This unit includes the Xbox 360 among other things. Remember ISSS (it is the software stupid). The hardware doesn't matter. Sony thought they could put all this high end electronics in their system and it flopped. Does anyone remember Neogeo or 3Do?
Of course Nintendo came up with a cool little controller, but like I say ISSS! Everyone is going to have motion detecting hardware. The question is who is going to have the fun games to play. I knew Nintendo would not be the system I would be playing for the next 5 years when I played the latest Zelda and found it was the cute childish type as they made it for the Nintendo Cube. Come on Nintendo! The generation that grew up with Zelda is over 20 years old now. Give us free range motion and gratuitous violence. I just can't see anyone playing Grand Theft Auto on the Wii, can you?
3. Microsoft is going to be around for a while.
With no long term debt and $6 billion in cash, Microsoft's balance sheet looks strong. Even if Microsoft makes a mistake they have the money to fix it. They have the money for R&D and for long term strategic plans.
It is just too bad it went up so quickly today. I would buy Microsoft all the way up to $36.94. They have not reached that mark yet so Microsoft is still on my BUY list, but their might be better deals out there.

