I'm also sick of people saying the same old things...
1. 'Macs are expensive' - Yes they
cost more but in terms of the overall price you pay during the life of your computer, they actually work out cheaper.
2. 'There are no Mac games' - Wrong again! there are
thousands of games - Doom 3, WoW, CoD, Quake 3, Sims, blah, blah, it may be nowhere near the number on PC, but usually only the best get ported/cross-platformed anyway,
and they are usually bug-free...
2a. I have an XBox and PS2 as well, so
3. Viruses - I don't even have antivirus software installed....
4. Spyware - what's that?
5. Windows Service Packs - don't make me laugh, OSX gets regular updates which pretty much work, without the pages of 'this may cause problems' crap that you get from MS. And when there is a
major upgrade - like the upcoming 10.4 'Tiger' you pay a reasonable amount for it....
6. Working - Less downtime = more productivity, that's a simple message for business.
7. 'Macs are not compatible' Another bit bull****, I use Office - 100% compatible with your version, Photoshop - again 100% Vectorworks (CAD) dual versions on the install CD, Firefox and IE browsers, GoLive, Illustrator, Imageready, Acrobat, Lightwave, Freehand, Quicktime
and Windows Media Player, as well as iRC, ICQ, YIM, and other misc crap.
True you can't directly use Win programs without an emulator, but there's nothing I really need to do that would require that...
8. Keyboard shortcuts? wtf? there are more shortcuts and cool tricks with the keyboard than you can possibly remember.
9. Features - The Dock, it's just
so much more than a program launcher, you can drag
anything down there, programs, games, files, films, your whole HD and instantly retrieve it. If for instance you are playing a movie and minimise it to The Dock, you will see a tiny window of the movie playing down there which enlarges as the mouse moves over it. Titles are also retained, I can minimise this window and moving the mouse along pops up the title 'Hard Light Productions Forums - Hard Light' (In slick shaded text) In all, it's about the most easy and intuitive interface ever designed... and it can be placed left, right, or bottom of the screen.
Other cool stuff? there's loads, but the one I use most at work is the ability to create PDF files from
anything it's soo easy - click 'Print' click 'Save as PDF' and you're done. That feature alone has probably saved thousands where I work..
10. Stability - It's very rare to have an issue, but the System will protect itself, say for instance you have a large Photoshop file which causes Photoshop itself to crash or hang, you can 'Force Quit' which shuts down Photoshop and leaves everything else unaffected, and you go on working with no problem.
11. Hardware - Macs use standard SATA drives, standard RAM, pretty much any USB device you can name, most printers, you can get gamepads, joysticks, tablets, external drives etc. etc. oh and iPods

also the build quality of he case is the best, I mean solid aluminium panels, clean design internally (no cable clutter) and there are USB + Firewire ports on the
front! who'd have thought?
Anyhoo, I starting to get too evangilistic now, so I'll STFU, but leave you with this; it's getting near to my 19th straight year of using Macs, and one hardware failure, yes one...