Space may be the final frontier in the "Star Trek" world, but apparently, earthbound grudges can still travel quite keenly through the vastness of space. "Icons Unearthed" director Brian Volk-Weiss knows that firsthand, as an interview he conducted for another project involving Gene Roddenberry’s “Wagon Train to the stars” saw "Star Trek II: The Wrath of Khan’s" Kirstie Alley tell a story about how William Shatner allegedly blocked her from returning for the next film in the series that gave us some of the best sci-fi movies.