I had gone to a Cheeseburger in Paradise a few years ago in suburban IL.  I spent the evening gazing in horror, there was live music, and drunken gyrating soccer moms for MILES. (or what seemed like miles)  However, Cheeseburger in Paradise during dinner rush on a Thursday eve in MADISON... was a different more chill experience.  Jimmy Buffet was playing constantly over the sound system and our service was quick and friendly like any chain restaurant. The margaritas were OVERPRICED ($5.75 for a 16 oz plain lime margarita on the rocks), and the food was okay. I had the blackened fish sandwich which was great... my sweet potato chips were not fresh. (Pescetarians and vegetarian have LOTS of options here, which is at times uncommon for Wisconsin.)