It's still a few months out, but the schedule for Summer Games Done Quick 2016 has been posted to their official website. SGDQ 2016 is almost a solid week of speedruns, starting on Sunday, July 3rd at noon and ending some time after the midnight between Saturday, July 9th and Sunday, July 10th. Games Done Quick, itself, is a charity event, which generated over a million dollars of donations in four out of its last five occurences. It occurs about twice each year, plus an extra one for special events (such as the 2011 earthquake in Japan and TwitchCon 2015).
They usually have a fair amount of PC titles in their mix. While the schedule doesn't state the chosen platform, Elder Scrolls II, III, and V will be run back-to-back-to-back, followed by Fallout 3 and Fallout 4. That all takes place after a block of Quake, Hexen, System Shock, Deus Ex, Star Wars: Dark Forces, Serious Sam, and other titles. Curiously, Super Mario 64 is missing, except for a 50-star run of Super Mario 64 DS, which is usually their big event. They will have a TAS block, though, which uses a computer to submit controller input at a much higher precision than a human would be capable of, leading to interesting glitches, like injecting an IRC client into Pokémon.
It's a fun spectacle, and it's for a good cause. SGDQ 2016 will benefit Doctors Without Borders.