Well, other than the fact that both Mega Man and Jay-Z were pop-culture icons of their respective eras (yes, people, Jay-Z is that popular), they now each have 8-bit, NES-style music associated with them.
Video game music from the 8-bit Nintendo Entertainment System (NES) era had a very distinct style. Even music on other 8-bit consoles like the Sega Master System could not match it.
Anyone who at least played an NES back in those days (pretty much every kid, at least in the U.S.) will immediately recognize the style of that sound after just a few bars.
It's not surprising, then, that some very talented individuals have begun experimenting with that distinct sound and applying it to contemporary popular music. In this case, specifically, hip-hop--or at least rap (the difference between the two as I see it should probably be saved for another blog).
Anyway, hip-hop--8-bit NES-style--is here, and according to the story at Shot Then, all the remixes were created by one Jesse Tugboat.
Check them out below. And if that doesn't remind you how much the memory of those old gaming days clings, take a look at the video below. It's a game intro for "The Dark Knight" produced as if it had been done on the NES. I especially liked the "by Sunsoft" touch.