Top 5 Hamburgers

I don't know Macdad, the best sandwich? I'd have to say it came from a Jewish deli, like
5) Art's in B.H. or Studio City
4) Mort's in Pacific Palisades
3) Shep's on Pico (I think it's gone)
2) Carnegie (N.Y.)
1) Webbie's on Laurel Cyn and Ventura (*sniff* gone...)
and was probably a hot brisket/pastrami combo with coleslaw, swiss cheese and Russian dressing on rye or onion.
Or maybe a tongue/liverwurst combo.
Non Jewish deli mentionables:
The Tam O'Shanter on Los Feliz has a GREAT sandwich board, and is a pretty good restaurant too. Owned by Lawry's, so the prime rib is terrific, too.
Here in Phoenix there are a couple of places, Luke's and Guido's, that make outstanding Italian beef/sausage combo sandwiches (ALWAYS with peppers and provalone).
My dad was born and raised in Upper Darby, Pa. I have no excuse for not getting over there one day to try real Philly cheese-steak.

Agree with Brent's. Super great hand cut lox.

Best Sandwiches:
Italian: NYC: Bar Stuzzichini, Defontes, Porchetta, Terroir, Torrisi
Chicago: Birchwood Kitchen, Joe Bostons
SF: Cane Rosso, Ironside, Orson, Sandbox Bakery, The Refuge
LA: Phillipes, Santa Fe Importers, Langers, Bay City, Claros, D' Elia's (Best bread ever)
LV: Snacks
Philly: Chinks, Dalessandros, Jim's Steaks, John's Roast Pork
New Orleans: Domilise's, Mothers

Thanks Tvad. I've been hearing about Langers for years; but it kind of fell off my radar. I'll get there the next time I'm in town, for sure.
I used to live across the street from Cal St. Northridge on Nordhoff, and I've never heard of Brent's. I'll give it a try also.
Bongo, you just flat out get around!
I enjoyed a place in Vegas the last time I was there. It's a small chain. It's called Hash House A Go Go. Take a look at the images Google puts up. It's lot of fun. San Diego's got one also. The dish I had was the featured dish on Man Versus Food.