Steam just cracked 40 million concurrent users for the first time, meaning Valve's user count was bigger than 80% of the countries in the United Nations
I feel like I've seen this before. I think it might be from a short film made in connection with The International some years back? Gabe used to show up in those in some fashion.
I'm not sure, but I think it could be the promotional video for the Cave Johnson announcer pack for Dota, there was a bit where he was goofing around while supervising the recording.