Dotty's has a solid selection of burgers and beers. I recommend the Heart Throb, which was pleasantly spicy. If you can't find a burger that meets your fancy, the build-your-own selection should remedy that problem. The burgers are cooked medium-rare, which, in my opinion, is the most delicious, but they will happily cook them well-done if you wish. An order of fries is large enough to split between two people.
Dotty's has interesting decor and the booths are dark and private. On a Friday night, though, be prepared for a 20-30 minute wait. Service was about average. A must visit for any burger lovers who find themselves in Madison.