Since s_noonan and faytree decided to make a coin toss scene, I thought that I would join the club!
This one is a little different than theirs, in that I use the image of a real human hand and movable thumb to flip the coin. The face of the coin rapidly toggles between heads and tails until it collides with the walls of the enclosure. I also display the word Heads or Tails which follows that actual image on the coin.
Your F key (which stands for FLIP) flips the coin. Using restitution and surface velocity, I try to make the coin bounce and roll back to the thumb after each flip, but it doesn't always work, so you may occasionally need to manually place the coin back on the thumb using the move tool.
Try the other coin toss scenes, and see how mine rates against the others. Ratings and comments are much appreciated.
UPDATE: New version now includes counters that keep track of total number of heads and tails.