Apparently there are only 3 game show movies which is why it looks so funky.

Talk shows and reality shows also have only double digit counts, which is why they are so lumpy.

It seems to be a function of sample size. Like someone else said, I don't know why a category with 3 movies was included.

edit: although the visual floor effect on reality shows is hilarious.

I question that when I read the game show category has n of 3, yet displays 3 curves, not 3 data points. Something ain't right, might be me.