If you are directly behind the basket, a few rows up in the upper level (above the brass rail) your view of the other end of the court is obstructed. The problem is the post that the actual backboard is attached to is fairly wide and is directly in your line of sight to the opposite side of the court. It's still not terrible but you definitely have to lean a little to one side or the other to see around the post. Other than that I don't know of a bad seat in the house.
"The future ain't what it used to be."