There are many good videos posted online that we can select to add in a class wiki or blog. If we embed the video in our own post we can ask our students to use the class link and thus avoid surfing the net uselessly, which sometimes takes makes them waste time. If you desing an activity on a specific video, embed the video under the activity. You may use videos from, and even add links to videos such as this one dealing with the Battle of Britain in WWII. The videos in do not generally offer an embeded code, but providing the link may as well serve a similar purpose.

And if the topic is History, here you can watch a video from dealing with trench warfare in WWII