An international and, for a change, Euro-centric look at notebooks and laptops in highly detailed, professional reviews. Notebookcheck.net provides both in-house reviews and links to those on external sites, and covers what I imagine is the widest range of notebooks and laptops to be found in one place. I would be wary of their purchasing guide, though, which didn't return a good selection of machines to meet my own fairly simple query, so you should, as always, look to more than one source before you purchase. However, the reviews themselves are deep and seriously intended to give prospective buyers the maximum amount of relevant information. Gaming machines are evaluated using gaming benchmarks, and business machines aren't; amazing how something as simple as that can be overlooked by some review venues.
If you're in the USA this may be your first exposure to some of the most remarkable laptops out there. Take time, if you have it, to look at the mySN XMG U700 Ultra, for example, which leaves the likes of Alienware standing but demands a price of up to 6000 Euros for the best configuration. And if you find the name a little tough to recall, there's always the almost-identical and closely related, wonderfully-titled, DevilTech HellMachine.
There's also a useful FAQ about laptops in general, with helpful information on graphics cards and CPUs and so on, and finally, a library of thousands of reviews of every laptop imaginable, in every language they could find.
I could do without the sidebar and Google adsense advertising, which is often apparently unrelated and unwelcome, but just ignore it and concentrate on the content and you'll find much here to enjoy.