I find Flashcontrol good https://chrome.google.com/webstore/detail/flashcontrol/mfidm...
Kills almost all the annoying video stuff and one click when you do want to see something. Works on CNN etc.
(also if fixed horizontal junk on top of the page annoys you check out my own (5 LOC or so) thing to toggle them https://chrome.google.com/webstore/detail/zapfixed/jgiflpbko...)
Of course doesn't work with Flash videos, but you should disable those anyway.
https://chrome.google.com/webstore/detail/disable-html5-auto...