I know it's not a chain (not even close) but the best damn(TM) burger I had was at the Sunset Grill on Sunset Blvd in LA. It also happens to be the one in the Henley song. Huge, juicy, piled high with toppings, I almost couldn't get it into my mouth. This was 10 years ago now, I don't know if it's still there or not. 7439 Sunset Blvd LA, CA.

-Zeke