A good picture is worth a thousand words, maybe even more.

For instance, we all know in our hearts that 'The Simpsons' hasn't been that good in a long time and that the earlier seasons were some of the best - but seeing the average ratings for each season actually graphed out shows a much clearer picture of the show's decline.

The information presented in these graphs ranges from totally random to totally useful. Either way, you'll walk away having learned something.