These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Blacklist
Anticlimax Boss: In-Universe: Reddington has been on the FBI's Most Wanted list for decades, yet he surrenders himself without a fight.
In "Anslo Garrick", it's revealed that Red is personally this to Ressler, since he spent years unsuccessfully hunting him, even ending a relationship in the process.
Hilarious in Hindsight: A meta example. In "General Ludd", William Sadler plays a dying man who's confined to a hospital bed. Then, on the Elementary episode "Blood Is Thicker", which was broadcast three days later, Sadler played... a dying man who's confined to a hospital bed.note Technically, the Elementary character wasn't actually hospitalized, but the comparison still fits.
Magnificent Bastard: Like him or hate him, Reddington always shows a sense of style and grace, the calm master criminal vs. the often overworked and harassed FBI agents.
There's also Madeline Pratt, who's able to play Reddington himself as part of her own schemes though he gets her back.
Nightmare Fuel: The Cyprus Agency kidnaps young women, keeps them drugged for years, and uses them to produce kids for unsuspecting couples.
The Scrappy: Tom and Elizabeth Keen. At times, Ressler is also this. Elizabeth has gotten worse with her botched interrogation of Tom Keen where he delivers a epic "The Reason You Suck" Speech calling her out on how easy it was to manipulate her emotionally and manages to overpower her with a broken thumb and escape.
Special Effect Failure: Any time there's Stuff Blowing Up (and since this is an espionage action-drama, that happens quite a lot), the CGI is painfully bad. Case in point: the plane bombing at the start of "General Ludd."