I would agree with LordNathan's assessment of the merits of
Tecmo Super Bowl -- it is indisputably the best sports game for
the NES, and quite possibly the best NES game, period.
Basically, what made this game awesome is the number of options
and statistics that it has, which perfectly complement its
above-average gameplay.  First of all, it has complete rosters
from the 1991 NFL season. The rosters all seem reasonably
accurate (or at least, all the stars are in the right place),
and each player is accompanied by a picture of themselves. Of
course, it's not really a picture of themselves; it looks like
they had about 10 models with adjustable hair color and facial
hair style. But, it's the thought that counts, and it's still
pretty cool.  Each team's offense was very customizable. There
was a starting and backup QB, 2 starting and 2 backup of both
running backs and wide recievers (although run-and-shoot teams
like the Oilers and Falcons had 1 RB and 4 WR's), and a choice
of kick returner and punt returner fro