William Shatner insists director Jj Abrams will struggle to cast the role of CAPTAIN JAMES T KIRK in his new Star Trek film, because the part is "uncastable". The 75-year-old played Kirk in the original Star Trek TV series and numerous movie spin-offs, and has sympathy for Lost creator Abrams because no one can match his iconic performances. He tells TV Guide, "I think it's essentially uncastable."