Yes
No
Depends (Outline in reply!)
Title says it all really - if you could, would you stick MacOSX onto your computer either as a dual-boot or to replace Windows?
Personally speaking, I'd love to do it just as a little project. I don't know about how it might work, but I'm sure that someone on the tinterweb has worked out an install guide!
There are plenty of guides on the internet as you say - however, I believe there is a clause in the EULA that prohibits it (ha - like thats going to stop anyone!!)
What will you be doing on Christmas Eve? What better way to get your children into bed then to have them join the search for santa!