...I dunno, but the music of the Noughties has left me pretty cold. And no, it isn't my age, cos I know plenty of people in their 20s who have said the same! 
I saw the Yeah Yeah Yeahs in about 2002 in a tiny club in London when they first came over from the States, and it was one of the best gigs I've ever been to. I went and saw them again, twice. I got really excited that there was a new band that I actually liked. Sadly they went right off the boil after the first EP and album, leaving me bereft. The YYYs are still the only band I've really gone for in the Noughties.
Rock/metal is my core musical orientation, and the early Noughties didn't seem too bad on that score at the time: System Of A Down were quite funny (good festival band too), Linkin Park I actually don't mind. But overall it's been pretty blah I would say. I can't bring myself to get excited about Devildriver, or Lamb Of God, let alone these godawful metal boy bands like Bullet For My Valentine and so on.
I think part of the problem is that we still think in terms of musical decades, because the Sixties had such a distinctive personality. So did the Seventies (sometimes), and so did the Eighties (albeit a crap one, mostly). The Nineties was where it all started to change, with the genres blurring into each other and the musical past being strip-mined for inspiration. The result was that the Nineties didn't really have a distinct musical personality of it's own. If someone says to you "I like Sixties music" you instantly get some kind of picture in your mind. If someone said to you "I like Nineties music" you'd probably go a bit blank and wonder what they were referring to, exactly.
The Noughties have been kind of like the Nineties only blander, and with far more shameless strip-mining of the past. People seem to think that they can form virtual tribute bands without being rumbled, somehow - Editors are the new Joy Division, Black Kids are the new Cure, etc.
As this musical decade creaks to a close (only 6 months left of the Noughties, can you believe it??) I am feeling sadly underwhelmed. What do you people reckon?