Here's one that perhaps points out a clock problem with an IR reversal.
1. A is behind by 2 points, has no TOs left and the clock is winding down to zero.
2. They throw the ball to the sideline to a receiver at the 10 yard line going in who appears to catch the ball and then immediately steps out of bounds. The clock is stopped with 1 second left so the FG team can come on and kick the winning FG in the BCS championship game (just to spice it up a bit).
3. However, the covering official rules incomplete judging the ball was trapped.
4. IR reviews and changes it to a catch at the 10.
When does the clock start?
What if the clock ran out on the play but IR can see that it was at .5 seconds when the official signaled incomplete?
If the clock is set to .5, realistically can A get another play (FG) off?
Remember, if the official "correctly" calls the play as a catch - there would be 1 second left, and a dead clock allowing A to do just what they planned - the winning FG.