Great teardown tutorial. Can confirm it saved my butt when I needed to open a 60GB CECHA01 PS3, which I successfully did in addition to (a) replacing the thermal paste, and (b) clean all the dust off.
Only problem with this tutorial is what sonofjay817 mentioned: poor instruction regarding the ribbon cables. THIS IS VERY IMPORTANT: the receptor end for the Blu-Ray ribbon cable needs to have a small black tab pulled open BEFORE removing, and BEFORE inserting the cable. I accidentally got it open by chance, but you might not be so lucky without my warning - and if the ribbon cable is done for, you will need to replace it completely.