This place is a joyful heart attack.
A pal took my wife and I to Fat Heads when we were in town for a quick visit, and it did not disappoint. Gigantic sandwiches/burgers and beers went directly into our bellies.
I failed to take notice of what everyone else ordered (I believe our friend got a Portobello mushroom burger of some build, and my wife got some sort of fried-egg Agro-crag), but I know I had a burger with a beef patty, pastrami and an egg, among other toppings.
I could not even get to eating the chips that came with that monster.
A nice beer selection, as well.
I do come short of doling out a 5-star review as I felt like the table was a little sticky, the chairs were a little beat up and uncomfortable, but I think that's part of the schtick of the place.
Would definitely recommend trying, but you may need 24-48 hours of nap-time before eating/drinking anything else.