Making his Oscar-hosting debut previous year at the 89th Academy Awards, the seamless show was marred by a monstrous mistake, in which the wrong movie was announced as the victor of the Best Picture derby, leaving it to Kimmel to tell viewers an error had happened.
So what is being done to stop the same thing from happening this year? At this year's ceremony, the company's chairman, Tim Ryan, has said he will be personally involved in making sure the evening goes smoothly.
The celebrity presenter of the award and the stage manager will need to confirm that they have the correct envelope for the correct category, before the celebrity steps out on stage to present it.
PwC partners are prohibited from using their phones or social media during the show - this rule was implemented immediately after last year's ceremony.
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In addition to balloting partners stationed on either side of the stage, the third will be situated inside the show's control room with Oscar producers.
Chief of the Oscars film Academy Dawn Hudson has said: "Let me tell you, I don't think this error will ever happen again or would happen again". PwC employees will also attend show rehearsals and practice what to do if something goes wrong.
Although questions were raised over PwC's future at the Oscars, the organisation kept its contract because the mistake was down to a "very public human error". I think I'm losing my mind. That person will know the winners, just in case there is a problem. "While I feel very, very good about all the work that's been done and the attention to detail that's in place, our job doesn't end until that curtain closes". But, like the rest of the undecorated masses, you can live vicariously through those lovely people who do end up hearing their names called out as the nominees for this year's 90th annual Academy Awards are revealed.
The 90th Oscars will air live on March 4 at 8 p.m. EST/5 p.m. PST on ABC.