While this clip ISN’T from an upcoming movie (that I know of), it’s proof that you can produce a believable Wonder Woman character on the big screen. There have been quite a few attempts at creating a decent Wonder Woman, whether for big screen or small, that have failed miserably.  Why have so many professionals stumbled when it comes to our beloved Diana Prince?  She’s one of the oldest and most revered characters in comic-dom, but no one can seem to get it right. Bleeding cool uncovered a casting call for a character that sounds like she could only be …