Throw a weapon in a physics arc with a lead to a target?

This is sort of an answer since it gets the job done, but, I too am wanting to know more about this topic. I have some basic scripting that instantiates, levels at a height of x, and shoots toward the enemy until hit, then explodes and dies.

 //Shuriken.js
 
 var Target : GameObject ;
 var TargetDistance : float ;
 var ShurikenSpeed : float = 50 ;
 var Life : float = 3 ;
 
 function Start () {
     Target = GameObject.Find ( "Troll" ) ;// Assign Target To ZTarget
 }
 
 function Update () {
     Life -= 1 * Time.deltaTime ;
     
     if ( Mathf.Ceil ( Life ) == 0 )
     {
         Instantiate( Resources.Load ( "Detonator-Crazysparks" ), transform.position, Quaternion.identity ) ;
         GameObject.Destroy ( gameObject ) ;
     }
     
     if ( Mathf.Ceil ( TargetDistance ) == 2 ){
         ShurikenSpeed = 10 ;
     }
     transform.rotation.y = 90 ;s
     transform.position += transform.forward * ShurikenSpeed * Time.deltaTime; // Move Entity Toward Target
     //transform.rotation = Quaternion.Slerp ( transform.rotation, Quaternion.LookRotation ( - ( transform.position - Vector3(Target.transform.position.x , Target.transform.position.y+0.1, Target.transform.position.z) ) ), 1 * Time.deltaTime ) ;
     transform.LookAt ( Target.transform ) ;
     transform.position.y = 1;    
 }
 
 function OnTriggerEnter ( collision : Collider )
 {
     if ( collision.tag == "Zombie" ){
         
         Instantiate( Resources.Load ( "Detonator-Crazysparks" ), transform.position, Quaternion.identity ) ;
         GameObject.Destroy ( gameObject ) ;
     
     }
 }


 //NinjaController
 
 function Update ( ) {
     if ( Input.GetKeyDown ( KeyCode.S ) && animator.GetFloat ( "CoolDown" ) < 0.1 )
         {
         
         Instantiate( Resources.Load ( "Shuriken" ), Vector3 ( transform.position.x, 1, transform.position.z), Quaternion.identity) ;
         
             
     }
 }

Anyone have a better method than this, would be greatly appreciated to post ! :D