Bill Gates got a feeling inside his bones at the Justin Timberlake show christening a new resort in Sin City ... and we've got video of the billionaire dancing his face off to one of JT's hits.
Justin was onstage for the grand opening of the Fontainebleau Las Vegas and Bill was in the star-studded crowd ... dance, dance dancing along to "Can't Stop the Feeling."
Bill looks like he's got that sunshine in his pocket and that good soul in his feet ... and he's moving so phenomenally next to his girlfriend, Paula Hurd.