If you love practical FX, you have to see this absolutely incredible documentary:
I love this so much especially the part on Godzilla but all of it is just wonderful to see. I also bought the DVD (I was lucky I found one here in Japan). I wish this got a bigger release and a ton more press because it deserves so much more. The history in it and the interviews are so spectacular plus it's well-edited and just a joy to behold.