One of my favorite events of the year is Summer Games Done Quick. It's a gathering of speed runners as they play through various games as quick as possible, all for charity. The event is taking place in St. Paul, Minnesota right now and you can watch all of it on their Twitch channel.
The event is 24 hours and lasts until August 1. Give to a good cause and watch some great players play through some classic games as fast as they can. Donations can be given at their website.