Ad Age charts the top 10 viral videos for week of October 12, with number of views for the week and percentage change in views for videos that stayed on the chart.  The list is compiled by Visible Measures.

A notable entry into this week s chart isn t necessarily compelling viral content.  A new video for a fitness device called the Shake Weight debuts at number four with 468,000 views.  The new video seems to have driven traffic to an older one for the same product, enough to bring the original video back on Ad Age s chart.  The older Shake Weight video sits at number five with 423,000 views.  It reinforces the residual effect a follow-up to successful viral video can have, drawing new viewers for the original video that launched the campaign.

Microsoft’s Project Natal video is number 6 with more than 405,000 views for the week.  It has now been on the chart for 20 weeks.

Check out the full list and watch the videos at Ad Age {link no longer active}.