An ex girlfriend of mine worked on Star Trek: The Undiscovered Country and during filming she described Shatner to me as being the most unliked person on the set. The animosity on the set towards Shatner was constant and palpable. According to her, he was mercilessly mocked, ridiculed, and generally despised by pretty much all of cast and crew who'd worked with him previously.
As a longtime fan of Shatner at the time, I simply refused to believe that the ultra-cool hero of my youth,"Captain Kirk", was in reality the workplace jerk.
He may have been a different person when he was younger and doing the original series.
I dunno. Hollywood gives young studs those leading roles as Alpha Male and then the cast and crew hate ‘em for it when they become stars for playing the lead role as an Alpha Male...