Mega Man X, the first in the series, combines the best of the original Mega Man series while fusing it with its own futuristic style.  This is one of the first Super NES games I ever played and will forever be one of the best.  The music, graphics, and storyline, ALL of it is superb (the "Ryu cheat" in this was a nice touch)!  While future X games were good (up until X4), none of them ever quite had the charm that this one possesses (maybe it was intended to "pass the banner" from the original series onto its next generation, so to speak.).  A MUST-HAVE!