Start with Danny Elfman's Batman theme + Heavy Metal + 8 bit platformer = Epic Fun!

I have not laughed that hard in a really long time.

Did they stop at Batman? No!  They covered all the classic:

Their cover of the X-men theme is amazing, and the Transformers, wow.  I feel guilty I didn't know about this sooner. 

Thanks to Badass Nerd for sharing the video.  This is in rotation for me now.

My name is Charlie, but if your looking for my work, I go by C. E. Dorsett.  I write scifi, fantasy, and a touch of horror.  I like to play with gothic, steampunk, decopunk, epic fantasy, and wuxia.  I love to tell stories and talk about books, movies, series, and music.