Nikola Tesla was a brilliant (if sometimes misunderstood) scientist, tinkerer and genius. Thomas Edison was kind of an exploitative creep. You may already know these things, but The Oatmeal's Matt Inman really drives both points home in his latest webcomic, and does so with the twisted mix of hilarious visual aid and irreverent commentary that we've come to expect of him.
Misha Collins on What Made Supernatural Successful
You can see first panel here (click to enlarge), but you'll definitely want to check out the rest over on The Oatmeal. Trust us — this one's worth the read.