I can't narrow any to one over another but I'll list those that should qualify.

Jesse Owens- '36 Olympics
MJ- Flu Game
Brett Favre- Maybe his best game after father's death
Wilt- 100
US Hockey- Miracle on Ice
1992 Dream Team- They were definition of great
Mark Spitz- '72 Games
Dan Jansen- '94 Games. He finally overcame his past struggles to win his last event. Huge in WI.
Gale Sayers- 6 TD's
'94 Packers Defense Wild-Card game vs. Lions- Barry Sanders 13 carries, -1 yards

"You should see the other guy."
-Tony Montana

"It might just be for a split-second, but it's still flying."
-Michael Jordan