I watched some of it but it's difficult for me to watch videos as our flat is small and last thing I want is my wife hearing apostate rhetoric before we've spoken about it.
Earphones are great for that purpose.
If something is just talk, you can also use different online services to download the audio as an MP3, and listen to it whenever you like.
http://www.listentoyoutube.com/http://www.youtube-mp3.org/http://www.flvto.biz/(I have not used the last of the three)