actually about them working on an x86 version, they are currently developing an open source version of the OS called Darwin with _some_ x86 compatability. Many of these developers currently also work between it and OSX. It is highly developmental so i doubt it would be stable enough to depend on as a main os. Haven't tried it but it sure looks fun.
http://developer.apple.com/darwin/index.html
os x has more kickass shit than windows by a long shot. although i await Longhorn to disprove this next year.
basing the platform on unix is probably the best thing apple could have ever done. this overcomes so many obstacles, interoperability, wider userbase, putting apple in more realistic competition with other backend server/production companies, joining opensource creates a stronger bridge of standardization, breaking apple-for-graphics-only stereotypes, other stereotypes of macusers changed, programming became more interoperable and less proprietary, and more practical.
macs have always had very nice hardware, even those old ones, they ran solid, more consistant than most pc's. Hell i had an apple II that booted os 7 in 10 seconds.Mostly because of proprietary hardware, but still it worked much slicker. this was when most of their stuff was not crosscompatable..ew..
some really cool stuff if you haven't tried os x (not just osx, os10.3 Panther then go try it now. Its so much different than 10.1 & 10.2. They are both HUGE leaps from eachother, many many changes went between these versions and fixed most bugs, a main one being stronger emulated backwards compatability.) here are some links:
http://www.apple.com/macosx/features/unix/
http://www.apple.com/macosx/products/