This video from the RoosterTeeth guys playing Mari0 (or, more specifically, trying to play Mari0) has been all over the place, but it's still very new, and it's fantastically entertaining, so if you haven't seen it, do yourself a favor and watch it in its entirety over lunch. You know how friendships can be tested when four players play New Super Mario Bros. Wii and have to work together to get through the level when there's no real reward for working together? Well, imagine that, but all the Marios have Portal guns, itchy trigger fingers, and zero ability to foresee the consequences of their portal placement. It's divine. Much thanks to Greggory for the tip.