Mega Man 2 is a game that hardly needs any introduction. This movie plays Rockman 2, the Japanese version, which is essentially Mega Man 2 in difficult mode.
This is an improvement of 6.24 seconds over the previous run through a variety of small tweaks.
See Rockman Tricks and the submission message for in-depth explanation and answers to various questions regarding this movie.
You can also see this run played back on a real NES with an input display!