matt’s

Debug.Break(); // Obvious!

gameObject.active=false;
gameObject.active=true;

// recursive
gameObject.SetActiveRecursively(false);
gameObject.SetActiveRecursively(true);

function OnGUI() {
	if( GUI.Button( Rect( x, y, w, h ), "Text" ) ) {
		Debug.Print( "Button clicked!" );
	}	
}

theGameObject.renderer.enabled = true/false;

var screenSpace;
var offset;

function OnMouseDown() {
	screenSpace = Camera.main.WorldToScreenPoint(transform.position);
	offset = transform.position - Camera.main.ScreenToWorldPoint(Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z));
}

function OnMouseDrag() {
	var curScreenSpace = Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z);
	var curPosition = Camera.main.ScreenToWorld(curScreenSpace) + offset;
	transform.position = curPosition;
}