Has anyone else ever gotten the Slamburger at Denny's? It's a burger with hash browns, an egg (I get scrambled), and cheese sauce. My girlfriend typically gets a breakfast type thing there, so she'll get bacon and give it to me to make it possibly the best burger available at a chain restaurant. Unfortunately, it's now only available on their late-night menu (and it was something like only $6, making it one of the cheapest things on the menu). Sometimes if you have a nice waitress you can get it at other parts of the day, but otherwise

.
Carl's Jr probably has my next favorite mass produced burger with their Western Bacon Cheeseburger. Nice big burger, onion rings, bacon, big slice of cheese, and bbq sauce slopped all over the top. I'll usually just get the burger and a cup of water for dinner because it's plenty enough food.
Apparently I'm one of the only people here that likes Wendy's, since their Jr. Bacon Cheeseburgers is possibly one of my favorite foods. I mean, two burgers, a fries, and a frosty for under $5?
The best burger I've ever had, though, was at this placed call
Eleven in downtown Pittsburgh. Here's the current description of it on the website: Angus beef, braised veal, bacon, crispy onions, fries choice of cheddar, Maytag Blue, gouda, Emmenthaler Swiss, goat cheese. When I got it there was a huge stack of roast beef instead of veal. At the time it was also $8. Their fries were also pretty great.
Jam it back in, in the dark.