Castle (2009)

After Hours - S5-E8

Plot hole: Beckett and Castle lose their cell phones and wallets and are being chased by the mob. Beckett steals a cell phone from a car but can't use it, since it is locked and then shut off remotely. Any cell phone can always dial 911, whether locked or blocked from service.

Grumpy Scot

Little Girl Lost - S1-E9

Beckett: [Growing weary of Castle and Sorenson trying to one-up each other.] Oh, for god's sake, why don't you both just drop your pants and get it over with?
Castle: I'm game.

Close Encounters of the Murderous Kind - S3-E9

Trivia: In this episode, Castle says the words "My partner is crazy and may start firing at any moment" in Chinese. Beckett then asks him "Semester abroad?", to which he replies "Nah, a TV show I used to love". This is a reference to Firefly, a TV show starring Nathan Fillion in which characters occasionally spoke in Chinese.

THGhost