The YouTube channel Machinima generates more than a billion video views a month

"Google has been handing out money to video makers so they’ll make more stuff for YouTube. Now it’s putting money into a video maker itself.
The search giant is set to invest in Machinima, one of the most popular networks on YouTube, via a funding round that should close within a month. Machinima focuses almost exclusively on YouTube videos for and about videogame players, and generates more than a billion views a month."

Source:  AllThingsD, 7th May 2012