Folks often note the contrast between the underplayed, nuanced performance Shatner gave as Kirk in the first season, and the more...notable performances that typified the character later in the show.
This article, from latter July 1967 (reprinted in dozens, if not hundreds, of newspapers), is illuminating:
Bill Shatner, these years, likely is as well-rounded, all-encompassing an actor as a hurry call to an agent can dig up. He can skip blithely from Shakespeare to riding in the saddle in a psychological Western movie–and yet, in his view, all this isn't good enough.
"Don't misunderstand," he says. "I'm not complaining about lack of work. I've seldom been out of an acting job since I got into the business. Show business has been kind to me and I hope I've paid a few dues to it.
"But right now, I'm not a full-blown, Grade-A star of the Cary Grant-Humphrey Bogart type. If you want to reach the top in this business–get the choice roles, be able to guide your career more personally–that's really where you have to arrive."
The stocky, intense Shatner, who goes into another year of the science-fiction series "Star Trek" for NBC this autumn–it's being taped, of course, right now in Hollywood–thinks he just may have the answer: give the public a little more Shatner and possibly a little less the character he plays.
"Take Grant, for example," he says. "He's always Cary Grant, no matter what the role. Bogart was the same. John Wayne, Jamese Stewart–they're always John Wayne and James Stewart. In other words, they put a good deal of themselves into a part. It's something I hope I'm learning to do."
"Star Trek" actually is the first time Bill has gone in for this kind of thing. "In the last few episodes of the 66-67 season, I tried to play a little more of myself," he says, "and it seemed to go over alright. I hope to continue with the upcoming segments."
Actually, during most of his career, Shatner has gone in for the classical, textbook interpretation of roles, as much as he can. If the part calls for a longshoreman, he tries to BE that longshoreman. "There are a handful of us in the industry," he says, "who get a lot of work because we CAN play so many different parts–men like Eli Wallach and Harry Guardino, for instance. But we don't get the big-star parts. I'd like to take a crack at them for a change."
His attitude, thus, is almost an exact opposite of his co-star on "Star Trek," Leonard Nimoy, who told me not long ago that, to him, the part was everything and he tried to submerge his own personality to it. Nimoy feels that if he does this week, the good parts will gravitate to him. You pay your money and you take your choice.
----
The article goes on to describe his acting career to date. So, it was a deliberate choice. It's a shame. I prefer actors who act.
I'll also note that, while Bogart and Stewart often played themselves, they did display range when they wanted to. African Queen for Bogart and Flight of the Phoenix for Stewart, for instance.
This article, from latter July 1967 (reprinted in dozens, if not hundreds, of newspapers), is illuminating:
Bill Shatner, these years, likely is as well-rounded, all-encompassing an actor as a hurry call to an agent can dig up. He can skip blithely from Shakespeare to riding in the saddle in a psychological Western movie–and yet, in his view, all this isn't good enough.
"Don't misunderstand," he says. "I'm not complaining about lack of work. I've seldom been out of an acting job since I got into the business. Show business has been kind to me and I hope I've paid a few dues to it.
"But right now, I'm not a full-blown, Grade-A star of the Cary Grant-Humphrey Bogart type. If you want to reach the top in this business–get the choice roles, be able to guide your career more personally–that's really where you have to arrive."
The stocky, intense Shatner, who goes into another year of the science-fiction series "Star Trek" for NBC this autumn–it's being taped, of course, right now in Hollywood–thinks he just may have the answer: give the public a little more Shatner and possibly a little less the character he plays.
"Take Grant, for example," he says. "He's always Cary Grant, no matter what the role. Bogart was the same. John Wayne, Jamese Stewart–they're always John Wayne and James Stewart. In other words, they put a good deal of themselves into a part. It's something I hope I'm learning to do."
"Star Trek" actually is the first time Bill has gone in for this kind of thing. "In the last few episodes of the 66-67 season, I tried to play a little more of myself," he says, "and it seemed to go over alright. I hope to continue with the upcoming segments."
Actually, during most of his career, Shatner has gone in for the classical, textbook interpretation of roles, as much as he can. If the part calls for a longshoreman, he tries to BE that longshoreman. "There are a handful of us in the industry," he says, "who get a lot of work because we CAN play so many different parts–men like Eli Wallach and Harry Guardino, for instance. But we don't get the big-star parts. I'd like to take a crack at them for a change."
His attitude, thus, is almost an exact opposite of his co-star on "Star Trek," Leonard Nimoy, who told me not long ago that, to him, the part was everything and he tried to submerge his own personality to it. Nimoy feels that if he does this week, the good parts will gravitate to him. You pay your money and you take your choice.
----
The article goes on to describe his acting career to date. So, it was a deliberate choice. It's a shame. I prefer actors who act.

I'll also note that, while Bogart and Stewart often played themselves, they did display range when they wanted to. African Queen for Bogart and Flight of the Phoenix for Stewart, for instance.