This video came to me in the right moment. I've always wondered how come the Batman logo changed so much, different from other superheroes, such as the Superman. Each story line, each media, has its own Batman logo.

And it was cool to find out that someone out there had the same doubt about it, and decided to look for an answered, coming up with this awesome video, showing us what we could call an "evolution" of the Batman logo. Check it out, and I bet you'll really enjoy this if you're a fan of the greatest detective of all time. Cheers! ;)