“The impact you had on our show and on our lives is everlasting,” the message read.
Nimoy’s Star Trek character, Mr. Spock, was the crème de la crème of the geek icons Big Bang character Sheldon Cooper (Jim Parsons) worshipped. In the 2012 episode, “The Transporter Malfunction,” Sheldon got a chance to interact with his childhood hero after being gifted with a transporter.
Though Nimoy never appeared in person, his cameo was memorable.
In a 2008 episode, Penny (Kaley Cuoco-Sweeting) gave Sheldon a napkin that was used and signed by Nimoy as a Christmas present, which prompted him to react like this.