All recorded with FCEU 0.98.15
All played in "normal" conditions (100% unassisted, normal speed at all times). In other words, I played these in real time, so to say, using no save states at all.
Mega Man 1: This is the result of several days of playing this game. This is the best I can get at it, which is not bad at all, if I can say so ;) Beat the game in 29 minutes. No deaths.
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN1.zip
Mega Man 2: Beat the game in 48 minutes in Difficult mode. Died twice in total (the first time I messed up in the 2nd laser pit, the second time I kinda didn't pay attention to my energy in Wily battle 1).
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN2.zip
Mega Man 3: The second game in the series that I played when I was a kid. In this play I died only once, and beat the game in 57 minutes.
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN3.zip
Mega Man 4: My personal favorite. It was the first Mega Man game I played when I was a kid. Here I beat it in 59 minutes, not dying even once (though there were a few close calls, heh!).
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN4.zip
Mega Man 5: Beat it in 1 hour. No deaths.
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN5.zip
Mega Man 6: Beat it in 49 minutes. No lives were lost. Also, it's quite apparent now that this game is shorter than Mega Man 3, 4 and 5!
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN6.zip
Mega Man 7: Beat it in 1 hour and 15 minutes. 100% completion; no lives lost. (recorded with Snes9X v1.51)
Link: http://rphaven.org/gs/stuff/taringa/MEGAMAN7.zip
EDIT:
Added Mega Man 7 play-through.