For the first time, I've managed to watch a complete video on #PeerTube. It was a guy talking, so the fact that video still freezes and lags all over the place on my ancient netbook didn't stop me. Still couldn't watch a film on it, or anything that depends on the video streaming smoothly. The audio worked flawlessly though: https://share.tube/videos/watch/763d1219-7d75-4cb9-8d09-51e6a78d0cda
This was also the first time I've seen a comment stream under a video, made up of comments coming in from the #fediverse. I even recognized one of the commenters as a mutual follow. That's pretty exciting ;)