Applications for EducationThe American Journey Modern Times video library provides videos that could be used short introductions or reviews of eras and concepts in US History. The only drawback to the videos is that they cannot be embedded into your blog so you will have to give students a direct link to each video.
Here are some related items that may be of interest to you:
WWI Video Map
From Washington to Obama in 4 Minutes With Dates
10 US History Google Earth Tours