Some of the things covered...

Publishing on demand with lulu and how many still useful books are out
of print but not out of copyright.  http://www.lulu.com/uk/ 

Microsoft going after TomTom for violating patents relating to the FAT
filesystem.
http://en.wikipedia.org/wiki/TomTom#Patent_infringement_lawsuit

How Sco made the source of Open Unix 8 available back in 2001.
http://www.groklaw.net/article.php?story=20090302180710908

The Uzebox, a homebrew games console built with just two ICs;  an 8-bit
microcontroller and an RGB to NTSC converter.  It produces 8-bit colour
and 3-channel sound.  All the source and schematics are available.
There's a couple of videos on this page.  http://belogic.com/uzebox/

[That reminds me of another interesting video.  It's worth watching all
the way through as things change after a bit.
http://www.linusakesson.net/scene/craft/ ]

Producing sound on a speaker by driving the output pin of a
microcontroller using a square wave, and then using pulse-width
modulation to approximate a sine wave.
http://en.wikipedia.org/wiki/Square_wave
http://en.wikipedia.org/wiki/Pulse-width_modulation

The Bresenham line drawing algorithm, and how the Wikipedia page is
misleading at best with its "remove duplicate pixels" example.
http://www.cs.helsinki.fi/group/goa/mallinnus/lines/bresenh.html
http://en.wikipedia.org/wiki/Bresenham's_line_algorithm

The Gnome Partition Editor, and how it doesn't queue changing partition
flags, or let you see or edit partition UUIDs or labels but will happily
copy a partition, creating a duplicate UUID.
http://gparted.sourceforge.net/

The easy peasy distro for netbooks.  http://www.geteasypeasy.com/

The frigate H.M.S. St. Albans' recent open day at Weymouth.
http://en.wikipedia.org/wiki/HMS_St_Albans_(F83)
http://www.royalnavy.mod.uk/server/show/nav.1332

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