As an Asian-American college student, I've been hard pressed to find a really tasty, authentic Chinese restaurant around the Oakland area. Let me start off by saying I think I've found it. Though the exterior of the restaurant doesn't look very grand, you'll be in for a fantastic surprise.
My group of 4 ordered Fuqi Feipian (Cold, Spicy, Beef Tripe Appetizer), Mustard Greens, Drunken Chicken and Pig's Feet which was a weekly special. All of these dishes with the exception of the Drunken Chicken were absolutely stellar.
One of the defining characteristics of Hunan Bar that sets it apart from other Asian restaurants is how much kick the spicy dishes have. Most other "spicy" dishes are not actually very spicy but the dishes here were hot enough that they made me want to wolf down my rice from a single bite. In general, the portion sizes and prices were also very reasonable. I will definitely be coming back when I'm craving Chinese - it's a shame that I only discovered Hunan Bar my last year of university.