A few documentaries up on Youtube.
This one is narrated by Leonard Nimoy. There are some factual errors, but nothing major.
Salem Witch Trials
This one is from the History Channel.
This one covers some similar ground in terms of the Salem Witch trails.
Witchcraft and Magic
Professor Wrightson's Early Modern England: Politics, Religion, and Society under the Tudors and Stuarts (HIST 251) from Open Yale Courses.
Just a few I have had playing in the background while working on other things.
Edited to add: This one was found by +Joseph Bloch.