Japanese Spider-Man Videos at Marvel.com
Marvel has been hosting episodes of the Japanese Spider-Man TV series produced by Toei in the 1970s, which is probably the craziest adaptation of a superhero property that I have ever seen. The best way that I can describe it is the Power Rangers crossed with some sort of dimly remembered fever dream about Spider-Man, in the 1970s, in Japanese. Watch Spider-Man pop awesome wheelies on a motorcycle and fight a giant scorpion robot with his own giant sword-wielding robot that transforms like Voltron, just because.
Here's a recent personal favorite, titled "Fearful Hit Tune! Song Dancing Murder Rock":