This is one of my favorite southeast Asian spots in Madison. Specifically, I always order Thai food when I'm there and it never seems to disappoint. I would recommend the Pad Thai, Drunken Noodles and Panang Curry (though the potatoes in the curry was a surprise).
Level 1-5 spice levels are available-- I thought that the 3 was perfect for someone that can tolerate spice but doesn't care to drink an entire gallon of milk during dinner.
They are busy, especially on the weekends, but the line is worth the wait and the service is fairly quick!