People that are rating this place low are nuts.
It's a greasy spoon sure, and yes, sometimes as you'd expect from such the service leaves something to be desired. That being said this is a super tasty burger. Very moist and delicious. The beer is also cheap and they have a great selection of local brews on tap and in bottle. The beer on tap comes in one size, FISHBOWL!
Also, get a fried egg on your burger, trust me, you owe it to yourself.