It's not embeddable here but I wanted to call your attention to a documentary that's available for viewing on YouTube. It's called Burger Town and it's a great look at the fast food hamburger business in Southern California, past and present. It's full of old commercials and interviews with restaurant employees, as well as footage and stills of classic burger shrines. It runs about 48 minutes but if the topic interests you, it's well worth the time.