The best part about "48 Hours" is that there are actual stakes to Peralta's foolishness. While every one of his silly inclinations has had consequences, this is the first time they could seriously mess up an investigation. Having an actual clock put on his misdeed just heightens the tension. It also gives him ample time to prove he's a terrible cop. The unseemly picture showing, where Jake intersperses photos of himself having fun with photos of the perp in prison. The utterly awful attempt to annoy the truth out of the accused using poorly played guitar and screaming. It continuously shows how inept Jake is. It doesn't help to see him whining and complaining about how he's "going to die" when he does actual work, like checking the security footage. It's mystery he's as successful a cop as he is.
The true shame is that the show isn't brave enough to let Jake taste of his comeuppance. It lets him wallow in the shadow of reality for a little bit, but then at the last possible second Jake's allowed a Hail Mary and solves the case. Which is a terrible move. I get that we can't have Jake suddenly be a morally capable employee, because then what would the show be about. But usually these characters are allowed to be more human, to show modicums of growth. Because Peralta is consistently pulling the last-minute solve, he learns nothing from his experiences.
It could be argued that suffering the slings and arrows of his angry co-workers is lesson enough, but it's made pretty clear that Jake doesn't care about that. Especially since he explicitly states that he wants to do something for them to be unselfish, so he doesn't care what they want (to go to bed). Jake is used to the ire of those around him, and there is no way he could continue being this obnoxious if he weren't so oblivious. Clearly, something direct and terrible has to happen to shake him out of this behavior, and it's a shame this episode wasn't brave enough to pull that off.
On the plus side, Brooklyn Nine-Nine continues to be hilarious. Boyle is turning into a national treasure, becoming one of the few characters that seem fleshed out. He loves Rosa. He loves food. When he loves something, he masters it with all the delight of an impassioned child, throwing his heart and soul into knowing everything about it. And he's earnest. It's great to see a character so at ease with himself, but not in an irksome way (*cough*Peralta*).
Meanwhile, Terry Crews is just awesome. As always. I'm shocked they found someone to dwarf him, in a subplot about his brother-in-law making him feel weak, but it's worth it for all the scenes of Crews sleep working-out. Plus, him stifling a yawn is by far the most adorable thing ever, prompting peals of giggles.