Donkey Kong Country really isn't that hard of a game, but some of the maneuvers you have to pull off are a little frustrating, so it would be nice to have a few extra chances.

If you go to the File Select screen

And press

B, A, R, R, A, L

on your controller (which kind of spells 'Barrel') you'll hear a confirmation noise. Start your file and blam!

50 Donkey Kongs (or Diddy Kongs, whichever way you want to look at it)!

Now you have plenty of opportunities to try and discover the hidden goodies littered throughout the game.