Here's where I tell you what you should like, and why you're a bad person if you haven't liked it already.
A lesson is learned but the damage is irreversible
Perry Bible Fellowship
Saturday Morning Breakfast Cereal
Scary Go Round
Red Letter Media
The Spoony Experiment
Yu Gi Oh Abridged
Rock Paper Shotgun (Can't recommend this one enough)
If you've anything to add, send me an email, and if I like it enough, I'll add it to the list. Go forth denizens of the internet, and fetch me your links!