Chuck Lorre, the showrunner of "The Big Bang Theory," was furious when he found out that a CBS executive had unilaterally decided to recast Kunal Nayyar's role in the show. Lorre believed that Nayyar was perfect for the role and refused to let him go.
He convinced the network executives that Nayyar was the right fit for the role, and thanks to his vision, Nayyar was able to continue and bring the character of Raj to life. The decision ultimately paid off as Nayyar became one of the key elements of the show and viewers couldn't imagine the series without him. Despite the drama, everything worked out for the best in the end.