How The Big Bang Theory was finally able to convince William Shatner to make a cameo

New York Post

Shatner famously turned down the hit CBS sitcom years ago. "So we reached out to him again,” says showrunner Steve Holland. “I got on the phone and chatted with him about what we were thinking about for the episode — at that point we didn’t have a script — but I think he felt like he wanted to be a part of this before it came to an end."