Seth Rogen proclaimed the film was a "nightmare", chalking it up to studio executives paying little attention to the most expensive portions of the film, and its inflated budget.
Nicolas Cage was initially cast as Chudnofsky, but dropped out. He intended to play the role with a Jamaican accent, much to director Michel Gondry's dismay. In his book, Seth Rogen talks about meeting with Cage after the movie got made and Cage accused him of telling James Franco about his idea after seeing the movie Spring Breakers - Una vacanza da sballo (2012).
When Britt and Kato are watching themselves on the news, running away from vandalizing the statue, Kato does not see himself on-screen. He reasons he is "too fast for the camera". When Bruce Lee played Kato in The Green Hornet (1966), they filmed his fight scenes at a faster rate because he was "too fast for the camera".
When the Black Beauty is first revealed, a 1939 Lincoln Zephyr is under the tarp. The original Black Beauty from The Green Hornet (1940) was a black 1939 Lincoln Zephyr that could go two hundred miles per hour, and outrun any car chasing it.