“What gift should you buy for the Diehard-obsessed NYPD detective who has everything? How about this: don’t buy him a gift at all, just let him wander into a real-life Diehard situation so that he can live out his John McClane fantasy. By the time “Yippie Kayak” ends, you half-expect someone (probably Boyle) involved in the episode’s central arc to reveal that they staged the whole “cops and robbers” fiasco for the sole purpose of Jake’s delight.” (Via Paste Magazine.)
A Constant Visual Feast 
I am a big fan of this series- I think it is very funny. I talk about it here, if you’re interested:
http://scribblesofstageandscreen.com/2015/10/20/battle-of-the-comedies-brooklyn-nine-nine-vs-modern-family/