Located in the western end of Willy St, Wah Kee is the best Cantonese/Guangdong style Chinese food in Madison. If you regularly go to restaurants in North American Chinatowns, this place will bring back your memories!
Wah Kee's menu is huge and even includes some Thai/Vietnamese items, but the highlights are in its Cantonese selections. Anything in the Lo Mein section is pretty good. Wonton Lo Mein is my favorite. They made wontons fresh and they are among the best I had in this country.
They offer some really authentic appetizers. I recommend you to resist your urge to order spring rolls and try out "fried turnip cake", "Yau Choi in Oyster Sauce", "Sticky Rice in Lotus Leaf", "BBQ pork buns", or "scallion pancake." It's pretty rare that you can find these dishes in the Midwest.
Rice in Clay Pot is also Wah Kee's specialty. Expect some preparing time but they worth the wait.
I wanted to give it 5 stars (as appeared in the very first version of the review) because it is such a bargain for budget foodies, but 4 stars probably will do justice to other Chinese eateries in town. Nonetheless, Wah Kee is one of the best meals you can get under $10 in the Madtown.