LinuxCertified is a vendor that sells laptops (and computers, I think). I just bought one from them -- they sell Windows (you pay a little extra for it) or any major distro of Linux. (FC, Ubuntu, etc.)
They guarantee that their installations of Linux will work with the hardware they use.
The real attractive part, for me, was the price point. Since they have the laptops custom built, they aren't bound to the contracts that larger companies (Dell, Gateway, etc.) are. I spent $1485 (after shipping) for a T9300 (2.5 GHz with 6MB cache), 4GB RAM, 320GB 7200RPM hdd, 512MB NVidia card, and 15.4" WSXGA (1680x1050) display. Dell and even Lenovo/Thinkpad could not even get CLOSE to those specs at comparable prices. (If you're interested, the laptop I got was the LC2430S)
Customer Service at LC was way better than Dell, too. (the benefit of dealing with a small company)
I don't mean this to be an ad for LC or anything, I'm just really pleased with my experience with them so far.
Caffeine works to keep us awake by competitively inhibiting the binding of Adenosine to sites in the brain. The body attempts to return to homeostasis by producing more Adenosine receptors (this is when your tolerance is built up) which means when you stop drinking caffeine, all the Adenosine in your synapses gets binded much faster. (leading to the withdrawl symptoms).
Depending on how MUCH you drink, YMMV when giving it up, but most people can get over it in a week or two of total caffeine abstinence and a handful of aspirin / headache medications to help you bear through it. You CAN get over it though. Giving it up isn't NEARLY as challenging as quitting tobacco or other addictive substances.
Best way to prevent getting hooked is to not make your caffeine intake routine; in other words, like all things, exercise moderation.
So you think that money is the root of all evil. Have you ever asked what is the root of money? -- Ayn Rand