Today is both Reformation Day and Halloween. In honor of the former, and in retrospect of the latter, here are two YouTube videos.
John Piper on Halloween.
Piper is introspective and balanced...well worth hearing in you have radicals on either side of the issue screaming at you.
Manic Monday Luther.
This one is just fun, but it is very much historically accurate.
HT: Dan Phillips, DG Blog