Unnecessary Inventions
"Unnecessary Inventions is the brainchild of inventor and evil genius Matty Benedetto. Over the past year and a half, he has designed and built over 190 inventions that solve problems that don't exist. Each week from his design studio in Burlington Vermont, Matty develops 2-4 brand new fake consumer products using diverse production methods from 3D printing, sewing, mold making, wood working, laser cutter, and whatever else he can get his hands on. Each invention lives across Unnecessary Invention's social profiles which have grown to a community of over 2.7 million followers. Each post mimics a real marketing campaign with their signature product photos and commercials alongside behind the scenes videos on how the inventions get built. Follow along to see what gets built next!"
It's a Southern Thing's Funny YouTube Videos
Super Bowl LIV/54's 2020 TV Ads.
Some of them are on YouTube if you search for them.

LegalEagle -- YouTube channel laws' accuracies in the medias
LeagleEagle's YouTube channel shows many interesting videos of discussions about T(el(evision/ly)V and f(ilm/lick)s -- "... Do you want to know how our legal system works? You’ve come to the right place. LegalEagle is all about giving you an insider’s view to the legal system. Have some fun and learn to think like a lawyer.
I get asked a lot about whether being a practicing attorney is like being a lawyer on TV. I love watching legal movies and courtroom dramas. It's one of the reasons I decided to become a lawyer. But sometimes they make me want to pull my hair out because they are ridiculous. So I created this channel to answer your burning questions about the law and the legal profession. While all legal movies and shows take dramatic license to make things more interesting (nobody wants to see hundreds of hours of brief writing), many of them have a grain of truth. Learn everything you always wanted to know about being an attorney! ..."
OwlKitty's YouTube Videos
"Lizzy (stage name: OwlKitty) is a two year-old cat living in Portland, Oregon. She stars in all your favorite movies and tv shows and gets lots of treats and cuddles in return. Offscreen, Lizzy loves her laser pointer, her adoptive mother (a 10 year-old tabby) and the taste of cream cheese. She’s never caught a bird.
So far, OwlKitty has made appearances in such classics as Star Wars, Harry Potter, Jurassic Park, How to Train your Dragon, The Shining, Titanic, 50 Shades of Gray and Risky Business. You can also find her in Game of Thrones, The Lion king and Stranger Things."
Anwar Jibawi's Funny YouTube Videos
And Now A Tweet By Neil deGrasse Tyson
The Winglet's Team Fortress 2 (TF2) YouTube Channel
Half-Life SFX's YouTube Playlist
So many. Pick your favorite and submit.

Peter Hollens' music videos using only his voice and mouth.
The Most Memorable Celebrity Cameos From Friends
Lots of embedded YouTube videos. A few are gone though.
LOL ComediHa! -- Comedy TV Show on YouTube
WTMRecut's YouTube channel - Parodies from TV & movies!
WTMRecut's YouTube channel has several parodied videos from movie/f(lick/ilm)s and tel(evision/lly)/TV s(erie/how)s. They can be amusing too.
For an example with its recent video from Reddit with this amusing a 1.25 minutes YouTube video showing "Ripley Power Loader FAIL | 'Aliens' Recut -- Ripley offers her Power Loader skills to Hicks and Apone...but she may need to go back to training..." -- I submitted into https://videosift.com/video/Ripley-Power-Loader-FAIL-Aliens-RecutHistory Buffs' YouTube Channel
Nick Murray Willis' Funny Animated YouTube Videos...
Funny Or Die Mashups -- Best Movie & TV mashups on the net.
Level UP -- Weekly Video Game Animations
Viva La Dirt League (VLDL)'s YouTube Channel
I missed a lot too! Better late than never.