I don't believe I've ever had a patty melt. I know I've never had a Reuben.
When I was attending UCLA it was a real treat to go the the Hamburger Hamlet in Westwood Village. I thought this was the best food I'd ever had, certainly the best hamburger by a long shot. There are lots of gourmet hamburgers now, but I do agree with DR Chas that HH's were exceptional.
Chas, have you ever been to The Counter? It's a chain out here. Burgers, fries, drinks--that's it. But VERY good. I LOVE their veggie burgers!