This mobile venture started nearly two years ago in Fort Lauderdale and has picked up so much steam that owner/founder Christopher Lee is expanding and taking applications for would-be dog slingers. Now, that's packin' some meat, bro. What is it about these darling dogs that made the list? Well, first off, hottie Lee wears an adorable '50s-era uniform, a nostalgic hat and a tie, and chats up customers while he tops off each dog. His cart is decorated with a nod to bygone days and offers a romantic throwback to a more innocent time. Now, let's talk menu. Creativity is a must. Items like the Swanky Frankie ($5), loaded with caramelized onions, cheese, and barbecue sauce, is served up oh so nicely. The "Claaassic" ($5) is dressed up with avocado, chili, potato sticks, French-fried onions, and a secret sauce. Oh, and if that doesn't make your mouth water, pick your own toppings, from pineapple to sriracha to hummus. Beef, vegan, and vegetarian options are available, so bite in, baby. Follow @FrankieDogs on Twitter and Facebook to track 'em down.