Internet2 will not happen in our lifetime. It has been rolling around in various forms for almost 7 years now.
Speed of the connection is irrelevant to me as it pertains to downloading something. I prefer to buy the DVD, even if it took 10 seconds to download, because after the download, you have to burn it to disk, then make some labels.
All that time ties up your computer and is a pain in the butt as far as I am concerned. Nicely packaged DVD's are under $20 U.S. It just makes no sense to go through the hassle of a download when it is so cheap to purchase.
I have a 15Mb by 2Mb /second connection at home, but still find it irritating to wait for a 50MB download.
Again, wait until the HD-DVD (or Blueray) DVD's hit the streets. No way in heck will I even consider downloading a 40GB+ movie. That is just nuts.
Oh, and those wonderful 1Gb/s connections cannot be sustained from any server right now, if more than 8 connections to the server are made.