I'm adding my flowchart here because I'm not sure if we're supposed to or not.
Excellent and funny, and reposted here with all credit forward to the source.
Published on IO9, this Create Your Own Original Trek Adventure Flowchart is a really fun take on how this kind of diagram can create a game-like set of options from a known set of actions. Stephanie Fox is the illustrator.
The folks at Games are Evil created a gigantic chart that tracks the history of game companies- mergers, acquisitions and branches.