When trying to see episodes of http://youtube-trends.blogspot.de/ 4@4AM which I missed last week, I've come across the source of the information for the video player.
http://spreadsheets.google.com/feeds/list/0ArrSjcjGNEM2dDdpSUlSXzJ5VWMwWFFwZkdqSDBoU1E/od6/public/basic
Which also has a HTML representation:
https://spreadsheets.google.com/pub?key=0ArrSjcjGNEM2dDdpSUlSXzJ5VWMwWFFwZkdqSDBoU1E
I've not succeeded with retrieving the last week data though I've learned that the only thing they need to do to update list of videos is to edit the online spreadsheet and add four new lines to it. That's clever.