'Boot And Nuke', and 'Build A Dvr Out Of An Old Pc'

Boot And Nuke

Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.

http://dban.sourceforge.net/

Build A DVR Out Of An Old Pc

According to the author, "Digital Video Recorders (DVRs) have become a necessary luxury over the last several years. Millions of people rely on these devices to pause and rewind live television, and to keep track of broadcast schedules and record programs for them. Many consider them just as essential to their daily lives as their cell phones. Several months ago, I finally became sufficiently jealous of the millions of DVR owners to motivate me to put a DVR in my own living room. But I wanted something more versatile than a normal TiVo, ReplayTV, or Ultimate TV system. I envisioned an all-purpose media server that would function as a full DVR, but would also work as a music server and play console games. It would have an easy remote-control interface, just like a commercial DVR, and a way to program it through the internet. Finally, I wanted to avoid the monthly fees that many DVR owners pay to keep their machines' schedules up-to-date".

http://www.makezine.com/extras/4.html