When Jake discovers that Sophia is a defense attorney, he compares their relationships to John McClane sleeping with Hans Gruber. These are the main protagonist and antagonist from the first Die Hard film. He then states that it's even worse than that and compares Sophia to the villain from the third Die Hard film. (07:00)
Later when he confronts Sophia, she says that she can't believe she slept with a cop, that it's as if she had sex with Hans Gruber. Jake argues that she's "the Gruber." (08:11)
When Homeland agent Kendrick asks Jake, "Is this some sort of game to you?", Jake replies, "Does this sound like a game? I am a terrorist leader. My name is Francis Gruber. My brother, Hans, died at Nakatomi Tower at the hands of John McClane. Also, I'm related to Jeremy Irons from the third one." (13:14)
Kendrick calls Jake "McClane" after they negotiate the terms of their fight
Kendrick shoots Jake with a gun he duct tapes to his back like John McClane does in "Die Hard"
When Jake mentions that he can't understand fans who have been sleeping on the street to hear DC Parlov read his new book, Terry notes that Jake took a train to Toronto just to buy the Canadian VHS copy of Die Hard. Apparently, there was a rumor it has better sound quality.
When Jake and Amy are stuck on the roof right before her Sergeant's Exam - Jake decides to Die Hard off the roof (before realizing there are bars.) He says he is doing it for Amy, but also himself as he has always wanted to do it.