Was shuffling through my music today in
iTunes Windows Media Player and came across some awesome tracks from Microsoft by a band called "Press the Green Button".
They're mainly about XP Media Centre but there are some references to Messenger, etc.
Couldn't find the actual Microsoft page these were posted on so I've linked to them directly.
Incidently, "Press the Green Button" is a joke phrase used by Microsoft as it is the opposite of "Press the Red Button".