Maybe it's just me, but I'm immediately turned off by food places that are located in basements. You have to go down a dark set of stairs to enter this subterranean burger joint, and it always just feels to me like I'm walking down to my doom.
Overall, the food and prices are pretty reasonable. The Hangover burger is massive, and if you order one they'll snap your picture and put you on their wall and facebook. Burgers are nice and thick, but somewhat dry. They aren't very strong in the way of sauces either. Overall, greasy, fatty goodness, but not anything particularly special.
Their fries were really good, the brown kind that are salty and unpeeled. Fair warning though - stay away from their pountine. The gravy basically tasted like thicker starch water - completely flavorless.
I recommend the shakes for a hot day!