This week I have been mostly learning...

The XBox 360 (Xenon), Wii (Broadway) and Playstation 3 (Cell) all use an IBM licensed PowerPC CPU.
The Ubuntu spell-check dictionary includes ‘SPARCstation’, but not ‘PlayStation’.
YSlow rocks.
Users of IIS should not believe the official docs on HTTP Compression, instead go to Coding Horror.
MythTV has a several second delay, changing between live channels, the delay is inherent to the architecture.
FreeView are renumbering their channels and apparently removing friendly channel numbering from their broadcasts, in favour of firmware updates.