There are multiple (currently six (seasons)) playlists showing "The best Movie and TV mashups on the internet Funny Or Die". Here is its (1/fir)st season.

Level UP's YouTube channel has a bunch of short funny videos related to video game consoles' games.

http://www.youtube.com/channel/UCchBatdUMZoMfJ3rIzgV84g has many hilarious videos from "... a bunch of nerds who play games and makes comedy sketches about games." like its Epic NPC Man.

I missed a lot too! Better late than never.

Lauris Beinerts' YouTube channel shows "Funny short comedy films / sketches / skits & any other videos / movies..." There are currently only nine/9, and hasn't posted any new videos for a year.

http://www.youtube.com/playlist?list=PLD56YYhzWk5slMw4jYfuaw-0Ekt2cKMrk

Totally accurate.

https://www.youtube.com/channel/UCe4bOvc1mYxFcQ5xPb9Zmow

Basically, CinemaSins but for TV series. Currently, there R 2 videos.

Buttered Side Down's YouTube channel has several hilarious videos (a new one released on Tuesdays) showing its "Comedy skit series following the exaggerated perspective of an unfortunate idiot..."

G(v/a)mers has a YouTube channel showing "... videos about videogames, often." There are evolutions, documentaries, parodies, etc.

http://www.youtube.com/user/OMFGItsJackAndDean has a lot of funny sk(etche/it)s by young guys.

http://www.youtube.com/playlist?list=PL0AQIMR-tpolhf1Qt4pZd14tpcpg2ltDN from Nostalgia Critic and Channel Awesome. "Remasters of Doug's original work from 2007 & 2008. Now in HD! ..."

president Trump, really?
on the plus side – I've been telling everyone I'm Melania's long lost cousin

Mashed's YouTube channel has tons of animated, funny, and (nerd/geek)y videos: "Do you like sweet cartoons? Comedy? Video games? Then you've come to the right place! Mashed collaborates with awesome creators to bring you a weekly dose of animated video game comedy. You'll get everything from parodies and razor sharp funny reviews to fictional videogames and music..."

http://www.youtube.com/playlist?list=PLYRBREKimPGkXzmVwLhHEP-MaxEBP7dfu

Curerently eight/8 videos right now.

Tripp and Tyler's YouTube video channel has a bunch of videos that make fun of a lot of things like people, dogs, work, technology, etc. -- "Guaranteed to make you laugh or not laugh, at least twice...guaranteed." See here as examples.

http://www.youtube.com/channel/UCd-AGY4zFEQyHVKYR2PPFMw

"We take your favorite films and mash them together. Subscribe for new mashes every week! ..."