Well, mayjune gave you one, you can come up with others; here are a few:
Code:
*
 **
  ***
   ****


*   *
 * *
  *
 * *
*   *

***
 ***
  ***
   ***


   ***
  ***
 ***
***

* * ** *** ***** ******** *************

***.* **** * ***** ********* ** ****** ***** *** ******