Me!!
This is my first Mac. I've been a PC user for decades, and have actually built and worked in Technical Support for years (Dell being the most recent company). The sleek design, and stability of OS X always attracted me, however the prices were never in the range where I felt like spending the extra $1000 or so was justified.
Recently I've decided to go back to university for a non-IT degree (economics), and have pretty much stopped gaming, and most other reasons I used to build a gaming desktop for.
I'm now the proud owner of a new 15" MacBook Pro, 2.0ghz i7, and LOVE it
Interesting enough because I follow the market, and study economics on a part-time basis, I seen a chart several days ago for last FY, and Apple gained another 10% on the PC market. Tsk tsk Dell

whom lost another few percent of the market, along with a "slight" gain by HP.
Apple has hit the "sweet spot" IMO, and if I had the cash available, the stock even at its current high is a discount buy. The iPhone is ruling the market and I do believe customers such as myself being introduced to the iPhone has in part played a decision to buy a mac laptop as their next purchase.
The design is just so elegant and strong. Working for Dell hardware support for years I do appreciate a good notebook design. You can FEEL how well designed this notebook is, not plasticy and "cheap" as many Dell Inspirons are/were.
With the price being reasonable at about $1700 CDN (with education discount), and even more reasonable if you went for the 13" model (which I almost did), and with the ability to run Windows 7 natively or virtualization "just" in case

the decision just felt logical.
Those who are sitting on the fence like I have for quite a while now, I highly recommend this system!
Thumbs up Apple, you made me into a believer