AGDQ is the Haley's Comet of Twitch streams - a few times a year (barring the HOTFIX streams in between), this Charity fundraising platform broadcasts some of its speed-running to the streaming world for those of us unable to attend in person.
Not a single person, but different from the competitive organization framework present elsewhere, AGDQ has the benefit of showcasing a variety-streamer level of content and genres with the skill of a single title streamer each and every time.
Also, y'know, all proceeds (Twitch and otherwise) tend to go towards various charities like Doctors Without Borders or the Prevent Cancer Foundation, and they've managed to grind out over 8 million dollars in charitable donations so far. If you're looking to add a little Holiday Spirit to your Twitch viewership, you could do much worse than AGDQ.
If checking them out over Twitch isn't enough, you can always keep an eye on ticket availability, game schedule, and location of their live events a the gamesdonequick home site.