Get one. Make sure you get it with Leopard. It includes Bootcamp [not beta, but the full version with customer support] which is a Windows parallel partition. That just means you can use the Mac any way you could a PC by running their programs. By programs, I would imagine all the Windows fanboys would be concerned with things like games and some other specific Windows programs. Things Macs normally can't do can now be used and if you need a sleek, easy to use, and intelligent interface with the performance you'd expect for artistic based programs [Music/Art/Photos/Videos], run the Mac partition. It's easy to switch from Windows to Mac. It's a matter of restarting the notebook. There's no reason not to get one besides maybe the price, but it's worth it. Just make sure you get the warranty.
They are better than PC's.
Also, don't get the retarded ass Macbook Air thing. It's a horrible waste of material. It's only decent for a person who doesn't spend much time on a computer. It lacks a lot of space that an actual Macbook Pro uses, and I don't mean physical space because yes, it's thin and small and looks cool, but if you expect to do work on the computer and store a lot of data like music and videos be ready to lug around an external hard drive. Not to mention it only has 1 usb port and most of the time you'll be using it for a wired mouse or some other external drive forcing you to use the track pad.
Arlen's right about the musician comment. It's extremely extremely useful for anyone who intends to edit such things like music, photos, videos, etc.
Also, my MBPro was $2400. I got it top of the line. It's something I require as a Graphic Designer. [Oh, and mine's a Macbook Pro, not a Macbook.]
And, Arlen, you might not want to smash his credibility but