iTunes 8 - Genius or Dunce?

As soon as Apple announced the new Genius feature in iTunes 8, I knew I had to give it a try on my iTunes library. Apple's new Genius feature analyzes your music library, looks at your iTunes purchases and attempts to generate a playlist based on your tastes, as well as recommend purchases on the iTunes store that you might be interested. In short, the Genius feature is a lot like the internet music service Pandora, except that it uses only music you own, and that it only recommends things that are available in their store.

Now, my library poses certain challenges -- for starters, my tastes are quite eclectic, and the majority of my music comes from Asia in the form of videogame or anime soundtracks, my library includes some more modern music, but the vast majority is not stuff that Apple iTunes is going to carry. I'm curious how it will handle my Podcasts (mostly of This American Life) and my audio language lessons.

I should note that as I type this entry, iTunes is analyzing my 46 gig library, and so far has taken about half an hour, and it's about 75 percent done. I have to wonder if it will be this way every time I use the Genius feature, or if it is only a one time thing.

Update: One hour later, and it's still sending information to Apple to be processed. I wonder if their servers are overloaded simply by the amount of people attempting to use this feature? Update 2: I'm starting to think I should let this thing go overnight -- it's been waiting for Apple to process the information for quite some time now. Update 3: I stopped the process after 3 hours and restarted it -- neither the data collection, nor the transmission/analysis step took as long as previously, and I got my results back within a few minutes. As expected, there was little, if anything that Genius was able to recommend for me, though I was impressed that they had tracks by Utada Hikaru and other J-Pop artists in their catalog.