I've found some fun things lately. I started out looking for physics videos to replace the ones I lost in the great computer crash of 2012 and can't seem to re-download from Currclick and these are some that I found.
These minute physics videos are very fun.
These Chemistry Videos look fun although I have only watched a few.
I haven't watched these but they look good as well.
Another one which seems to be about various subjects.
Smarter Every Day
And, if you want to watch these without having to look at other videos/ads, use this link.