AGDQ (Awesome Games Done Quick) is a huuuuge speedrunning marathon (hosted by SDA, Speed Demo Archives) with dozens of players playing dozens of games during one week non-stop. The whole purpose is to help charity organizations (Prevent Cancer Foundation) through donations.
This link to the stream: http://marathon.speeddemosarchive.com/
Link to the schedule: http://marathon.speeddemosarchive.com/schedule
I've been watching on and off, since I've been studying for exams but it's really worth it. Even if you don't know the games, they provide commentaries that help you follow the action and the tricks used.
Also, if you can, don't forget to donate
