I wouldn't say "slick interface" at all. I can hardly believe my mom finds it easier to find things on a Mac than on a Windows.
I find it much easy to do many things. For example: on Windows, to rename a file, you have to right click, and then select rename. On Mac, you just press enter.
Windows setting suck too. Yesterday I was trying to see what was wrong with my grandpa's internet, and I took me fore ever to find the TC/IP settings for his connection.