Growing up in LA, I was lucky to have In-n-Out and Tommy's. Outside of LA, everybody knows about INO, but not so many know about Tommy's. Chiliburgers FTW!
Their chili is made the proper way, without beans. It is the perfect topping for burger and fries. I don't think I would try it on a chocolate shake though... ;)
Tommy's burgers are really good and since not as many people know about them, the line is shorter than INO.