Some of the comments here make me laugh. I will ignore the fact that I have seen quite a few friends switch to Mac over the last few months, and that my job entails fixing computers, 100% of which are PC's because the Mac's we have in house never break. Build quality? If you compare the build quality of an aluminum Mac (even back to the pre unibody Macbook Pro's) to that of a plastic, clunky PC you will see the quality difference. Mac's have that professional look AND feel to them, and are powerful enough for plenty of people to get their tasks done.
Yeah, you can stroll into Best Buy and buy a sub $1,000 laptop, but its going to be a thick, clunky, ugly system. Thats the way the ball bounces, and if that satisfies your needs then so be it. I could put my Macbook Pro next to any PC, and challenge anyone WITHOUT BIAS to tell me which looks more professional, and higher quality. 9 out of 10 people will say the Mac, maybe even all 10.
If I call Dell for support, I speak to someone in India that I cannot even understand. If I call Microsoft for support, I also get someone in India that I cannot understand. If I need Apple support, I get a US based person. Thats a world of difference to me. The quality of the Apple brand is reflected in the design and detail of their products and the quality of their support.
Finally, if Windows PC's are so wonderful, why did MPC/Gateway (the Gateway business division that my University owned so many laptops and desktops from) go out of business while Apple keeps posting amazing profits?