This is an idea that came to me for possibly a short video ad of some sort.  Promotes safer driving I guess, but really.. change the ending and it could promote a lot of things.

  Scroll through a series of scenes showing every day life.  Closer shots show they are actually running backwards.  Over time, we see that these are all mistakes that people make (spilling coffee, breaking tables, etc) that are fixed by going backwards in time.

  Eventually we come to the scene of a car accident with a car pinning a helpless victim to a tree.  The scene running backwards, however, does not solve the issue.  The car pulls away and the victim slides to the ground.  The car is intact - in fact, it's brand new - but the person is still dead.

     A man is traveling with his family and gets stranded in a dark cave.  He is alone and trapped in a large pit within the cave.  Fortunately, there is a stream of sunlight reaching down towards one end of the pit and plants are growing there.  From these few crops he is able to survive.  Later he also climbs down rocks deeper into the cave where it's darker and discovers a river where he can catch fish.

     The whole time he is alone until he one day notices someone standing in the shadows on the other side of the river.  The person can't really be seen and is just a dark figure.  The man calls and waves out.  The person doesn't say anything, but the man assumes it's because they're too far apart to hear each other.  However, the person seems to motion or signal back before fading back into the shadows.

     The man doesn't see this person again until one day he injures himself along...[More]

     A freshman boy walks down the school hallway eating a cup of ice cream he got from across the street.  While walking, he suddenly looks up from his ice cream to realize his surroundings look different.  It's the same location with some things altered, perhaps looking older or worn out.  He eventually realizes he has ended up 3 years into the future.
     His friends tell him he's crazy.  When the boy tries to use his ice cream as proof, they tell him he just got it from across the street.  Defeated, the boy just accepts his situation for the time being.
     His learning is accelerated and he quickly adapts to his new life.  He seems to learn things instantaneously sometimes (such as math) even though he doesn't remember having been good at it before.  One day his friends bug him about the ice cream again and the boy gets irritated.  The boy suddenly shouts, "How could I have gotten the ice cream...[More]

Scene 1:
-- Cut to door outside hallway. --
» Boy opens it and walks in with Friend1 and Friend2 (back to us).
-- Cut to front of group, angled to show only Boy's face. --
» Group walks toward camera down hallway, talking and laughing.  Boy talking and laughing with them.
» Boy drops...[More]

  Pete wiped his forehead and stepped back.  He had just finished helping an elderly woman pack luggage into her car.

  "Thank you so much," the woman said, standing back in amazement.  "You kids are doing so much these days."

  "It's no big deal," Pete chuckled, pulling out a sheet of paper from his pocket.  "Really, I should be thanking you instead."

  "What's...[More]

  "Son! You need to get your grades up!" my mother exclaimed loudly.  She paced across the room and glanced repeatedly back at me, anxious to see my reaction but disappointed at my blank stare.  "You will become a failure! Nobody will give you a job!"

  I did not understand; I had almost straight As - perhaps one B.  I opened my mouth to protest, but immediately she thrust her finger into my right eye.

  "Son! Why do you have a scar on your cheek? Wash it off!"

  I stared...[More]

        The great and powerful tree stood proud and tall.   The rebels of men shuddered under its might.   For centuries, man has struggled in vain against the growing power of trees, but now, man has gathered enough strength, enough courage, to rid themselves of the trees once and for all!

        And so the tree deployed its minions, the grassblades, against the evercoming rebels.   The men roared and screamed at the sight of the seemingly infinite number of enemies before them.   At last, they realized to their horror; they were painfully outnumbered.

        But fear not! For the rebels had been well prepared and a secret weapon was at their disposal.   One of the lowly rebels scurried quickly and returned with the long awaited... lawnmower.   And with this lawnmower, the rebels advanced, plowing through the endless fields of grass, charging through flying grassroots and chunks of dirt and mud.

 ...[More]

         This is a true story...

         So there was a short lil' guy named Bob and this tiny little  kit-cat named Tom.   Tom was hungry one day and Bob didn't have any  water.   Tom begged for food, but Bob said  no so the tiny cat scratched him.   Bob tried to call for help, but accidentally swallowed his hat.

         A huge ugly dog named Jack came along, but his real name was Bob.   Bob tried to feed the dog to Tom the lil' cat, but Jackbob tried to scare the cat.   Bob then became angry and Tom got  angry too.   Tom didn't know why he was angry  so he started chasing Bob around, but Bob was angry that Tom was angry because he was angry, so he started chasing Jackbob the dog.

    ...[More]

Choose-your-own-adventure short story I wrote way back in 7th grade for Young Authors program, back when I still hand-illustrated things and bound books by hand.  Very short, basically a one-month assignment in class.