Watched it as well. It's been so long since I watched Friends so I hardly remember the tiniest details, but overall it was nice.
The most interesting tidbit, which is always cool to get these info from the insiders, was when Matt LeBlanc said he couldn't relate to the show watching it because "I can't buy it, I know I'm the one acting so I don't feel the lines", or something like that. If he watches any other actor, he could appreciate the performance, but knowing it was HIMSELF acting, he knew it was all "fake" and couldn't fully believe it.
It's cool to know how artists view their art and their performance, for example I'd love to know how musicians approach the concerts and how they live them, surely it must be a complete and totally different experience. Heck, that's what I actually asked Bruce Dickinson when he did his book tour, and was taking written questions from the audience, mine was "what's your stream of consciousness when you're on stage?", and he started to explain the last tour set song by song to make a point about how he's fully concentrated on everything he's doing, and everything he will have to do, saying "sometimes people ask me what it's like to perform in front of 50k people, I don't know, I'm so concentrated I don't have time to enjoy the sight of the audience".
At the same time it was interesting to know that in this case Matt LeBlanc can't "believe" the performance because he's the one who did it and knows very well it's all staged and rehearsed, I wonder if many other actors feel the same, especially in the CGI era. Do superheroes actors enjoy the final product, or see it and just go "eh.... easy to do it with a computer, I was standing in front of a green screen and my partner had that stupid mask on the face to map it and then replace it with an alien face"