Make sure you check out the new updates to Potts' Favorite Chrome Extensions & Apps doc.
Have you used EdPuzzle? If you haven't you should. EdPuzzle lets you edit videos and turn the videos into a lesson equipped with your own questions about the video. I love EdPuzzle for any kind of lesson and students like EdPuzzle too. Now there is an extension for EdPuzzle that puts a small button at the bottom of the YouTube video. This small button lets you start editing your videos immediately.
Check out the EDPUZZLE web site or the extension.
Another new extension added to the list is READABILITY. This is an awesome extension for any teacher. Readability is a web and mobile app. Turn all the bulk on a web page like ads, web page noise and other clutter into a comfortable reading view. This is must have extension.
GOOGLE DRIVE ADD-ONS
I have been slowly compiling a list of awesome Add-Ons for Google Drive. Check out this LINK to access my current list of Add-Ons.