The chaps over at College Humor's Bleep Bloop series delve into the world of Mega Man:
Of course, this only covers the Classic series. Which leaves us to wonder what they might have to say about X, Legends, etc. And perhaps to hope they come back around to it.
If nothing else, they do raise one very good point: Mega Man never really became the mainstream darling that the likes of Mario, Sonic, or even Capcom's other series like Street Fighter did, even with an animated series or three and action figure lines. I fully believe that Mega Man could hold a greater appeal to a wider audience, if given the proper kind of push. Nonetheless, one has to wonder just what exactly has kept the Blue Bomber from really catching on.
Source: Protodude's Rockman Corner