UFC on Fox Primetime: Velasquez vs. Dos Santos is an upcoming special to be aired on October 30th, and features an in-depth look at the Nov. 12 showdown between UFC heavyweight champion Cain Velasquez and challenger Junior Dos Santos. And to get you hyped for that, here is a brief preview of the special, which includes some press conference snipets ala Creed vs. Drago, some behind-the-scenes training footage ala Marciano vs. Lewis, and even squeezes in some of the lovable, rags-to-riches story…