I know it isn't the greatest pizza in the world, but it isn't really about being pizza. This is more like a streamlined delivery device for everything from steak to mexican to classic comfort foods. Ian's is quintessential part of being a UW student, especially with the demise of so many other of the campus area's late night pizza joints.
Craziest slice I ever had there was a one-off they had created at lunch. It was poached pear with walnuts, brie, and microgreens. I think. That's close at least.