This has been my favorite Madison restaurant ever since I walked in 7 years ago. Their menu hasn't changed in all that time, and I don't mind at all. Their salad dressing is magical in its deliciousness. All of their entrees are simple, hearty comfort food--serious meat and potatoes kind of fare! I took one of the pickiest eaters I've ever met there (she was scared of the place), and she walked away proclaiming it to be "delicious." Try the Coconut Curry Chicken or the Lamb Tibs--they're the shit. I would also recommend a refreshing "Gin & Ting."
I love the fact that it's a teeny hole in the wall (or hole in the basement, rather). It makes me feel happy and smooshy inside just to be there, but it's particularly nice in the fierce cold of a Wisconsin winter. :)