Comedian Seth Rogen, whose movies include "Knocked Up" and "Superbad," stars in new 3D, action comedy "The Green Hornet," based on characters that appeared in a 1930s radio serial, a 1960s TV show and a comic book series.

Rogen, who co-wrote the movie that debuts in theaters on Friday, stars as Britt Reid, a slacker son of a media magnate who dies mysteriously. Britt befriends his dad's employee, Kato, and the duo reinvent themselves as crime fighters with Britt becoming The Green Hornet and Kato his sidekick. At the same time, they both have eyes for their new secretary, Lenore Case (Cameron Diaz).

Taiwanese singer Chou is a superstar across Asia, and he makes his English-language acting debut in "Green Hornet." He and Rogen sat down with Reuters to discuss teaming up for the movie, Chou's command of English and Rogen's singing voice.

Q: How did you two meet?

Rogen: "We met over Skype, like most people do these days. In looking for a Kato, we got a hold of Jay and set up a time to read one of the scenes over Skype. He was in Taiwan and I was in Los Angeles. We read the scene where we're arguing with each other in my guest house."

Q: Jay, you had an English tutor on the set because you didn't know the language. How was that?

Chou: "My English dialogue teacher was very scary."

Rogen: Yeah, she was the real bad guy on set.

Chou: She was like my mom. 'Hey Jay..."

Rogen: "...are you studying?" (both laugh)

Q: Did you know any English when you began shooting?

Chou: "Just 'What the hell?' and some bad words."

Rogen: "It was amazing how much he learned. But he understood it for the most part. We went through each scene and made sure he understood what was happening."

Chou: "Seth is very smart. Because he wrote the script, he could change anything. My English is not so good and sometimes (my lines) were difficult to say. Seth would say, 'Okay, let's change it.'"

Q: You two are together throughout most of the film. What were some of the biggest challenges you endured?