The menu is huge here and you'd likely have to go to Fugu several times before discovering your favorite items. My favorite dish here is the sliced fish with sweet and sour sauce. I've never had anything as similar and as tasty as this. The cumin beef and the twice cooked slice pork are also great choices here. Not sure why, but I also really like their spicy string beans.
In addition, ordering for takeout at Fugu is pretty convenient. I've never seen such a great set up for an Asian restaurant. You can order online and there is usually a discount for doing it this way. Just check out Fugu's website.
Your best and closest bet for good, authentic Chinese food in Madison would be Fugu. There is no close second.