A couple of issues. I think you missed using an anti static wrist band to protect the mobo from static. Iv'e never seen anyone remove the mobo screws prior to removing the case!!! and the only thing that could have made the video better was if you put it back together and it actually worked. :) I've got a wee old P2 under the desk if you want a stab at upgrading in the next vid. Free for you, postage only mate lol.
If you take apart the harddrive, then you can remove a very nice sized and very-strong neodymium magnet. I would never let one get away without harvesting that magnet.