Here are the numbers from Comscore  for the month of April, 2008.  The data is normally a few months behind (particularly when we are getting the data for free -- you pay you get it quicker), so nothing strange about this.  The numbers keep telling a strong story about web delivery of video.  It's not just coming, it's here. 

• 11 Billion videos watched in April 2008 (down from previous months)
  
• 71% the total U.S. Internet audience viewed online video
• The average online viewer watched 228 minutes of video
• 18-34 year olds were the heaviest viewers watching 287 minutes each
• 82.1 million viewers watched 4.1 billion videos on YouTube (49.8 videos per viewer)
• The average online video duration was 2.8 minutes

While there's a lot of junk being watched out there...  there's also a LOT of opportunity in that audience.