In GW1 (the 'honest one'), Schwarzkopf suggested use of the BLU-82 to clear Iraqi minefields. He was advised that "Everybody within 3 miles of the drop will be bleeding from every orifice of his body". Combined with suitable leaflet drops, the psychological effect on the Iraqis would be obvious....
One day we were told "Jake and Elwood will be playing the desert tomorrow!". Having no idea what that meant, it was only after the first 2 BLU-82s had been dropped that we realised that this was a reference to 'The BLUes Brothers'. They had an immediate effect on the rate of desertion, as did the B-52 attacks.
The GBU-43 has an even more devastating effect as the rats holed up in their Afghan tunnels have discovered...