SSmart weapons are used for specific tactical warfare to minamize casualties of war and to increase succesful  accuracy.  If you want to read a more detailed description go  HERE 
Laser Guided Bombs:
 GBU-10 
 GBU-12
 GBU-16
 GBU-24
 GBU-27
 GBU-28

TV/IR Guided Bombs:
 GBU-15

GPS Guided Bombs:
 GBU-29
 GBU-30
 GBU-31
 GBU-32
 GBU-36
 GBU-37

Other Guided Bombs:
 
WCMD
 MMC  (ex-sbs)
 
 If you would wish to see a video-clip of a GBU tageting and destroying and Iraqi intelligence center then
 DOWNLOAD this AVI file