Maxthon Rated 3 out of 5 stars
The Maxthon have a addon like this but better and work on ever site. If you want popup the video you can, no matter where you are.
Hava a demostration of him on youtube (http://www.youtube.com/watch?v=PyhXm9kZBC0)
google it "Maxthon 3 Browser: Pop-up video and Resource Sniffer".
Anyway the idea is good just missing becoming more functional.
Thank you for share.