A filmmaker and video editor, Alan Melikdjanian, started a YouTube channel back in 2007. He debunks viral videos and adverts, whilst performing in character as the rather surreal "Captain Disillision".
Don't let the bizarre performance scare you off - his production values are simply outstanding, especially considering he does this all pretty-much singlehandedly, and has done so with hardly any recognition for the past 10 years. I think his channel only hit 100k subscribers last year, so it looks like he might finally be getting some well-deserved recognition.
Here's a few links to some of his best stuff. You'll probably be thinking "WTF is this?" when you first start watching, but trust me and stick with it:
- https://www.youtube.com/watch?v=H_slT5YpBok