Backgammon Probability Charts
Here are a couple of charts that you may find interesting. The first one shows you what your chances are of entering both one man and two men from the bar. A couple of points are worth noting:

This
second chart shows you the percentages of hitting a blot,
wherever it may be on the board, assuming that all the
points between your man and the blot are open. (And often
they aren't.) For example, if your opponent's man is 24 points away, only a roll of double sixes will hit this man... 1 chance out of 36 or about 3%. If a man is 12 points away, there are just three rolls that will hit it. (33, 44, or 66 would do the trick.) Note the big dropoff after your opponent's man is six points away. You have the greatest chance of hitting a blot if your checker is six points away... 47%, almost a 50  50 chance. (The 17 rolls that hit are 15, 16, 22, 24, 26, 33, 36, 42, 46, 51, 56, 61, 62, 63, 64, 65, 66.) However, if this blot is just one further point away, the chances drop to just 17% since now only six rolls of the dice will hit. (16, 25, 34, 43, 52, 61) 