Eating the White Truffle Swiss burger in front of someone should be banned as a form of torture as per the Geneva convention. It's THAT good.
I've also tried the California burger, and it impressed me as well. It wasn't as much of a hit as the White Truffle Swiss burger for me, but that comes down to personal taste, some of my coworkers preferred the California.
The burgers are so filling you COULD skip the fries, but they're the perfect accompaniment to the burgers so that would be a mistake. They offer a variety of aiolis for dipping and a house-made ketchup!
I'm working my way through their menu as quickly as possible, their calendar makes it easy to track them down. But I'm crossing my fingers that they make my office near University and Elwood a regular stop! ;)