Huang made the presentations GTC 2021 keynote, and no one noticed that it was a virtual Huang in a virtual kitchen.

About the only thing real was Huang’s voice, Nvidia said that he did do the presentation, sort of.

"Through all but 14 seconds of the hour and 48-minute presentation — from 1:02:41 to 1:02:55 — Huang himself spoke in the keynote", the company's blog post now reads, so while the Jensen you saw in his virtual kitchen may have been a virtual model, the voice you hear is Huang giving the keynote.

The virtual presentation used Nvidia Omniverse, a multidisciplinary collaboration tool for creating 3D virtual workspaces.

The virtual presentation in April 2021 raised no suspicions among the tens of thousands of industry professionals and press who covered the event. Nvidia's Omniverse was that good at recreating what has become a familiar scene.

In a blog post, Nvidia talked about the experience of recreating a space for which tech enthusiasts have developed a real attachment. "Jensen's kitchen" was a pandemic staple for PC hardware fans who were used to watching or even attending much larger, more heavily produced launches.

"The demo is the epitome of what GTC represents: It combined the work of NVIDIA’s deep learning and graphics research teams with several engineering teams and the company’s incredible in-house creative team", the company said.

"To create a virtual Jensen, teams did a full face and body scan to create a 3D model, then trained an AI to mimic his gestures and expressions and applied some AI magic to make his clone realistic.

"Digital Jensen was then brought into a replica of his kitchen that was deconstructed to reveal the holodeck within Omniverse, surprising the audience and making them question how much of the keynote was real or rendered."