I love watching people racing each other in randomizers, especially with commentary.
But two tiny things I love when watching them in particular are...
(a) the things players do when they have to wait for a cutscene, elevator, or some other in-game thing. Very often they'll make characters "dance" to the music or there's a set of movements that have become a cultural tradition within the community to do in that one spot.
(b) the things players do when they're frustrated by a bad check or useless hint, from planting bombs on treasure chests to peppering the hint door with peanut popguns to mock-smacking an NPC with their weapon. It may be a race, but dangit, it's just so very human to take a few seconds out and have a little in-game grumble before continuing on.
