Digit-Life is currently running a wonderful roundup of all the newly released revisions of 10,000RPM SCSI disk drives. It's chock full of pretty pictures, colored graphs, and tables filled with facts. It is also manages to be thorough without forcing you to read a novel of information. A good read for a slow weekened.
3DSpotlight also deserves its share of the limelight for this excellent piece detailing all the various tweaks that you can apply to Windows XP. Much of the information also applies to Windows 2000 and even NT4, so if you are newly breaking into one of these operating systems or are simply bored and feel the need to tweak, be sure to give this one some consideration.