A lot of misinformation here in this thread.
I bought a Macbook air, and after loving Aperture installed Os X Lion on my desktop. I game and do Office stuff in Windows, and dual boot into Lion to browse and do photography and video editing. My Desktop has the following specs:
Intel Core i7 2600k @ 5ghz
Asus P8P67-WS Revolution
16GB Gskill Ripjaws DDR3 1600mhz
250GB OCZ Vertex 3 SSD
2x Radeon HD6970 graphic's cards
XSPC Watercooling
It works flawlessly and was extremely easy to set up. I did a clean install using the rBoot CD and a usb key of Lion that I made with a little app called something like Os X Lion Disk Maker. It was literally this easy:
1. Download Lion from App Store, OS X Disc Maker, rBoot CD, Multibeast
2. Plug in USB Thumb Drive
3. Run OS X Disc Maker, press "Make Disc."
5. Burn rBoot cd to a DVD.
4. Plug in your newly made Lion thumbdrive to your PC and pop in the rBoot DVD.
5. Turn the PC on. When rBoot launches, select "Boot Lion OSX." Complete install as you would on any mac.
6. When install is done, run Multibeast.
7. Since my video card is new and not yet supported in Multibeast, I had to download a single extra kext and install it. Most people will not have to do this.
The entire process takes about one hour, and 30 minutes of that is waiting for files to be copied to the USB drive and DVD.
Every single thing works on my system. App store, iTunes store, SOFTWARE UPDATE, Dual Intel gigabit lans, TRIM, full graphics acceleration of my HD6970's, full realtek audio, sleep, firewire, bluetooth, and even USB 3 thanks to multibeast. It was shockingly easy. I even bought a Magic Trackpad for it.
Needless to say, my Hackintosh is far faster than a Mac Pro in every way, and with more features (like USB 3). There is zero difference in experience between my Macbook Air and my Hackintosh - except the Hackintosh is much, much faster.
For those of you who don't believe, I'm charging my SLR now and will have pics up soon. And actually, if you have any benchmarks you'd like me to run I'd be happy to.