The blog Cinephilia And Beyond has amassed an amazing assortment of documents and videos related to Stanley Kubrick's satirical magnum opus, Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb. This includes a never-before-seen-or-heard "promo reel" put together by Kubrick during the production - using some takes that ended up on the cutting room floor - apparently designed to assuage the rattled nerves of the film's (understandably) skittish financial backers. You have to watch this thing to believe it.
Also, you absolutely have to visit the above link, which is a true treasure trove of Strangelove-related goodies, including multiple versions of the script, color photos of the shoot (some taken by Kubrick himself, others by Peter Sellers!) and more stuff than I can jam into this space without puking in my own mouth out of how jealous I am that I didn't put it together first! Go... just, go!
I'll start you off with the first part of the aforementioned promo reel. You need to go to the above link to see the rest, and check out all the other great stuff they've got.