The Big Bang Theory has a big star coming for the season finale. Judd Hirsch will appear on the season finale of the CBS series as Leonard’s father. The finale is scheduled for May 12.

The Hollywood Reporter shared details about Hirsch’s casting. This will mark the first time that Leonard’s father has appeared on the comedy. Details about the exact character are still being worked out, but Steve Molaro revealed at the James Burrows tribute that the episode might end with a cliffhanger.

Johnny Galecki met Hirsch at the James Burrow tribute. He shared the story about the meeting with The Hollywood Reporter. He said:

“We’re all honored to be invited to this James Burrows tribute … and we all had the opportunity to meet these incredible casts Jimmy directed, and I had the opportunity to meet Judd Hirsch. I ran up to him and bombarded him with conversation that went on for a long time about what a fan I am. I did share with him that when we were shooting the pilot, I re-watched the first two or three seasons of Taxi — not because I wanted to base Leonard on his character but the purpose his character served, this anchor in this group of people — and he was just as much at times a voice of reason as he was just as confused as everyone else. I shared that with him, and a lightning bolt struck … or another merlot … and I said, ‘Would you have any interest in playing my dad on the show?'”

Hirsch was last seen on the small screen in Forever, which was cancelled after just one season on ABC. Are you a fan of The Big Bang Theory? Is Judd Hirsch ideal for the role of Leonard’s father? Tell us what you think.