The urban legend that Simon tells Gareth about an undead Bruce Lee working undercover as a Hong Kong cop was also told by an incredulous Ricky Gervais in a 2002 episode of his London based radio show on XFM.
While Gareth and the computer nerd are talking about Bruce Lee, Tim remarks: "man, those cats were as fast as lightning". This is a nod to the popular Carl Douglas song "Kung Fu Fighting".
This episode reunites Matthew Holness with Martin Freeman and Ricky Gervais. They all worked together on TV comedy series Bruiser (2000) where Gervais and Holness wrote many of the skits.