One nice option with it (call it cheating if you want to) is that you can choose to start playing again at any point in the replay. So, it's like having a save file for every instant in time in the replay. :hmm: If you slap yourself in the forehead and scream "If only I hadn't done so and so at such and such a time....."
you can save the game with replay, play it back to such and such a time and start playing again
(but don't do so and so again:rotfl: ).