AppleTV is already having an affect.
It is interesting to see how the video sites are covering AppleTV developments.
Here are a few sites you might want to check out:
Roughly Drafted
FormatWars is particularly interesting comment on the history of audio and video recording.
Awkwardtv
As I write this on Friday evening, the home page has links to the following articles among others:
Engadget How-To: DivX and Xvid on Apple TV
Linux on Apple TV
FRScreenSaver 101: How to create Apple TV screen savers
AppleTVHacks
Some of the articles here:
Plug-ins for BackRow: an RSS reader plug-in is now a reality.
$1000 Bounty for External USB Drive Hack
Apple planning additional Apple TV models?
Hack the Apple TV without opening the case
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