I enjoyed how you contrasted the pop culture moments and political upheavals of the decade with the technical ones. In addition to the impact of the ipod and social media, I'd like to chime in on how Google made a "splash".
At the beginning of the decade it was just an obscure little search engine. By the end of it, it became "the" search engine, and then cornered the market on email, chat, video chat and document sharing. We can't count out YouTube of course (or rather Google's purchase of YouTube).
I haven't "ridden" the Google Wave yet but it will be interesting to see how that grows and what Google will do next.
Didn't Al Gore invest in that company early too? Smart dude.