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! ..."

http://www.hulu.com/hulu-pets and http://blog.hulu.com/2015/04/01/hulu-introduces-hulu-pets/

Late, I know.

http://www.youtube.com/playlist?list=PL2RZlL_hemmlB-JKSx6m9J_FYaXxWb5qB

Not good as Epic Rap Battles IMO.

FungBrosComedy's YouTube channel has a bunch of hilarious/funny videos -- "We're brothers who believe in advancing the education and discussion of Asian and Asian-American topics for people around the world..."

http://www.youtube.com/channel/UCUBq8oBRVTsMpjWiHfjJpDw

Same guys who did Cinema Sins.

http://www.youtube.com/user/bryanharley/videos

Mostly movies.