![Kal Penn on Twitter: "For years, people have been telling me I'm really funny on The Big Bang Theory. This Thursday, I'll finally be on an episode! Tune in 🙌🏽 https://t.co/rC78S9VWJu" / Kal Penn on Twitter: "For years, people have been telling me I'm really funny on The Big Bang Theory. This Thursday, I'll finally be on an episode! Tune in 🙌🏽 https://t.co/rC78S9VWJu" /](https://pbs.twimg.com/media/Dw5OEr_UcAAg3Qj.jpg)
Kal Penn on Twitter: "For years, people have been telling me I'm really funny on The Big Bang Theory. This Thursday, I'll finally be on an episode! Tune in 🙌🏽 https://t.co/rC78S9VWJu" /
![Big Bang Theory' Star Kunal Nayyar Shares a Pointed Moment With Kal Penn in Behind-the-Scenes Look (Photo) Big Bang Theory' Star Kunal Nayyar Shares a Pointed Moment With Kal Penn in Behind-the-Scenes Look (Photo)](https://www.thewrap.com/wp-content/uploads/2018/09/kunal-nayyar.jpg)
Big Bang Theory' Star Kunal Nayyar Shares a Pointed Moment With Kal Penn in Behind-the-Scenes Look (Photo)
![Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/Kal-Penn-Big-Bang-Theory-1229432.jpg?r=1579204716584)
Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk
![Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/secondary/Dr-Campbell-The-Big-Bang-Theory-Kal-Penn-2262837.jpg?r=1579204721868)
Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk
![Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory: Who did Designated Survivor star Kal Penn play in the series? | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/secondary/Kal-Penn-Big-Bang-Theory-season-12-2262836.jpg?r=1579204721796)