Google Video throws me a different page depending on whether the browser is IE or Firefox. For what reason? I have no idea. It's bloody bullshit by Google!!
Take a look at the screen shots below.
[Click on the image for all sizes option]
Observe the listings below the search box, viz Top 100, Comedy, Movies.. etc. Right next to the category name is a small downward arrow, a drop down list actually. Mouse-over on any name and a list appears.
On FF (below) the drop down doesn't show up. Why this 'differential treatment'?