While his videos are high-quality today, his first Top 10, Top 15 Hardest Super Mario 64 Stars, is horrendous. He recorded his TV screen with a phone because he didn't have a capture card, he exaggerated the times he got the stars, ranging from 2-4 hours and didn't intend for them to use comedic effect, and included many stars that would seem very out of place for a hard list anyways, such as Blast Away The Wall, Watch For Falling Rocks, Princess Peach's Slide (21 second one) and Eye to Eye in the Secret Room. Years later, NB himself admitted that it sucked.
One of his Top 10s from 2013, his Top 5 Best and Worst Mario Kart Items video is just straight up garbage. The main problem with that video is his choices and why he chose those items, as well as the fact that he forgot to put the Fake Item Box, Coin, and Thunder Cloud (the worst items in the series) on the worst side of his list.
His 2016 Top 10s are also pretty mediocre. He overused memes as he also added filler, squeaky talking and (in the intros) cringeworthy games grabber ads. He also admitted they suck years later.
He stated that his favorite Mario Kart entry is Mario Kart DS.
His favorite handheld system is the Gameboy Advanced SP.