Over at Virtual Zone there's an example of taking overclocking to the extreme. In this case, they used dry ice to overclock a Athlon FX 2.2 ghz to over 3 ghz!
Virtual Zone
Myrill Lynch made new reports on nVidia and ATi - and the results may or may not suprise you. More details over at ipKonfig.
ipKonfig
Here's an article with nVidia's David Kirk, courtesy of Firing Squad. All in all, a fairly interesting read.
Firing Squad
Even if you're not looking for any such guide at the moment, it never hurts to learn. LAN Addict has a guide on how to make a (working) LAN cable out of bulk CAT-5.
Lan Addict
If you're thinking of getting a Athlon 64 or Athlon FX computer, you should read the buyer's guide that AMDZone has put up. However, it isn't cheap at all, so be warned.
AMDZone