As noted on GoodDesktopDistributions?, every distribution that exists only as a "desktop Linux", simply tries to be Windows.
As soon as people take this idea and realise that they are not locked down into simply trying to emulate what Windows is and does, they'll get much further. It's what makes MacOSX so successful.
Important differences between Linux and Windows
You (can) know precisely what your computer is doing at every point.
1?: for example
For most processes you can just type "man foo" to find out what they're for, and that is certainly not like Windows. -- JaredWigmore?