Bonnie's does a great job with burgers. A little spicy and completely delicious. Two things I appreciate are that a) cheese is included the price... none of this $1.50 extra BS and b) salad is a choice instead of fries. And it's tasty mixed greens with balsamic, too. Perhaps Bonnie's is what's right with Park Slope-- something comfortable and laid back, gentrified in all the right ways.