Today at work I was mapping state house and senate districts to counties or congressional districts of certain states. I was going through Mississippi house districts and I found what I think is the worst case of gerrymandering that I've ever seen:

Rachel, who is from Mississippi and very into Mississippi politics, tells me this plan came about because the state didn't get a plan together fast enough and the Justice Department intervened.

The above district is congruent because it's held together by a road or something very small (see the arrow). It might even be considered worse than the North Carolina 12th Congressional District.