I saw this article online and thought it's worth sharing. Ben Gibson and Patrick Mulligan designed a chart that shows the many different varieties of beer as well as a few commercial brand names for each.
I like this chart because it helps me to understand how various beer styles are related to each other. However, it did raise a few questions. Some of the styles (Cream Ale and Baltic Porter, for example) are listed as both Ales and Lagers. I guess that means you can brew them using either Ale or Lager yeasts.
Anyway, if you like this, you can buy a poster for $25. What do you think of this chart?