There is a bunch of great free video resources on the web for Operations Research. I'm sure everyone has heard of YouTube. Well there is plenty of great videos that give insights into Operations Research. YouTube, and sites like it, have given the public domain a useful repository for learning. Sometimes pictures can explain a concept better than the written word, especially in the field of Operations Research.
Some of my favorites include:
Professor Leon Lesdon, The Importance of Operations Research - a good introductory video and an interesting case study.
Operations Research - by bnet. a great overview of the field of Operations Research even if it is a promotion.
Learn about OR and the Edelman Award - I'm sure this was developed for an INFORMS conference. Offers a great look at Operations Research and the award for excellence in Operations Research.