After living in Madison for over a year and standing in line at Ian's pizza at bar close time too many times to count, I have to say I still haven't found anything like it. There is something about that place around 2 AM on a Thursday-Saturday night.
Their pizza is awesome, but maybe tastes even more like heaven simply because of the mass amounts of alcohol consumed prior, who knows. What I do know is that Ian's mac n cheese pizza is hands down the best mac n cheese pizza I've ever had. I've tried other kinds, but let's be honest, when you're drunk it's all about the carbs and the cheese and nothing hits the spot like Ian's mac n cheese with some hot sauce on top!
Plus, standing in line for pizza at 2 AM makes for some serious stranger bonding. I recall everyone in line joining together to sing "In the Jungle" along with probably the entire soundtrack to The Lion King once upon a Friday night.
And you always know you've been to Ian's when you have $1 coins that they always give out as change :)