I did read the warning at the top of the forum before writing this, and decided to place this in the main DiningBuzz forum instead of something geographic because it could technically apply to worldwide dining.
I'm a hockey fan more than anything, so I'll start by offering what to eat and avoid at the home of my New Jersey Devils, the Prudential Center in Newark, NJ.
^ - the gyros behind Sections 16 and 130 (IIRC)

- the pizza...just horrific.
Any fans of particular teams, please feel free to chime in, regardless of your sport's seasonality.