I've been following along with this but just now watched the video. As to the comments on that: I've seen some other videos from that guy and, while I don't know him in person, I'm willing to bet he doesn't normally act very much like that. I think he was just messing around for a class presentation (which that was: he had to sign the lyrics to a song). A lot of people act a little different when giving a presentation in class because they're nervous at some level. Plus, why not jazz things up a bit rather than just stand there signing? Have a little fun with it.
As to the question at hand: I used to get jealous in a way until I realized that it really was not at all productive and there was no point wasting the energy. Now I guess the closest is, as LordKAT first said, envy -- though not in the bitter, resentful sort of way.
Not so much post-op guys -- them I see as being more inspiration for what is possible than anything else. I've experienced it a little with cis women/cis girls in the "it'd be easier to pass if I had that body shape" sort of way or something more along those lines. For cis guys though, yea, I'll see certain traits and whatever and wish I had them or hope I have them after long enough time on T. I try not to dwell too much on it unless looking at myself in the mirror, or generally, and picking the things that I wish were different or that I hope will change. Even then I usually have to cut things short because I start to feel ugly, haha. Sometimes I do allow a little dwelling though. Oddly enough, it doesn't tend to cause real dysphoria for me unless I'm already dysphoric or really picking myself apart.