If you're thinking of hitting up Wendy's, McD's or KFC on 17th Ave, do yourself a favour and keep driving up the hill a ways until you reach an establishment that looks like Wendy's, but is really Giant Hamburgers.
I stopped in for lunch, and I must concur that the hamburgers are not giant, but they're definitely a couple of steps above what you'll find at any major chain. I ordered myself the Himalayan Steak Burger. It was more like beef on a bun with some tasty sauce added in than a hamburger. The server handed me some extra napkins with it and said "here, you'll need these." He was right, that was the messiest burger I've had in a long time.
Giant burgers is by no means a 'must-eat' establishment. However, there were some creative burgers on the menu that you wouldn't find elsewhere (like the Bulgogi Burger), and the price is on par with what you'd spend and any other fast food joint.