'The Big Bang Theory' actor Bob Newhart dies

Bob Newhart, who fled the tedium of an accounting job to become a master of stammering, deadpan humour as a stand-up comedian and later as a US television sitcom star, died on Thursday at the age of 94, his publicist said.

Newhart died at his home in Los Angeles after a series of short illnesses, said his longtime publicist Jerry Digney.

Newhart had two hit shows - first playing a psychologist on The Bob Newhart Show from 1972 to 1978, and then portraying a Vermont innkeeper on Newhart from 1982 through 1990. In both shows he relied on a bland, cardigan-clad everyman character who is confounded by the oddball people around him.

Newhart was nominated for Emmy Awards nine times, beginning in 1962 for writing on his short-lived variety show, but did not win until 2013 when he was given the award for a guest appearance on The Big Bang Theory.

Newhart's career began in the late 1950s, with a comedy routine in which he played straight man to an unheard voice on the other end of a telephone call. Tommy Smothers of the Smothers Brothers duo called Newhart "a one-man comedy team" because of his dialogues with invisible partners.

“When I first started out in stand-up, I just remember the sound of laughter,” Newhart once said. “It’s one of the great sounds of the world.”

His 1960 live album, The Button-Down Mind of Bob Newhart, was a big hit that was also highly influential. It became the first comedy album to top the charts and earned him three Grammy awards.

Newhart's characters had a trademark stammer, which he said was not an act but the way he really talked. He said a TV producer once asked him to cut down on the stammer because it was making the shows run too long.

"'No,' I told him. 'That stammer bought me a house in Beverly Hills,'" Newhart wrote in his memoir, I Shouldn't Even Be Doing This!

He ended his Newhart show in 1990 with an episode regarded as one of the most unique in the annals of US television. In the last scene of the series he awakens in bed with his wife from the first series after "dreaming" his life in the second series.

Newhart sprang from an era of angry, edgy stand-up comics such as Lenny Bruce, Shelley Berman and Mort Sahl, but his act was subtly subversive, without the profanity or shock used by his contemporaries.

He exploited his hesitant, bashful ordinariness to skewer society in his own fashion - including sketches about how a publicity agent would "handle" Abraham Lincoln or one featuring an inept official on the phone with a frantic man trying to defuse a bomb.

Newhart was born on September 5, 1929, in the Chicago suburb of Oak Park and graduated from Loyola University Chicago in 1952.

In the late 1950s Newhart had a boring accounting job - in which he claimed that his credo was "that's close enough" - and began writing comedy sketches with a colleague as a diversion. Those led to radio performances and eventually a record deal with Warner Bros.

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