I came across RoboRealms Vision Software, and thought it might interest some one in the field; its price, and features seem reasonable. I wonder what can be done with it when you work in conjuction with .NETMF hardware.
More info here.
site
http://www.roborealm.com/index.php
demo
http://www.roborealm.com/tutorial/Hand_Gestures/index.php
demo
http://www.roborealm.com/tutorial/Counting_Dice/index.php