Youtube is an awesome source for almost any subject you can think of. You could easily start a whole new thread like this focused on Youtube Channels alone.
Did this get done? (a thread for youtube interests) I'm fairly new here so I haven't seen it, and I don't know how to search for it. But I'd be interested to see what interests people on youtube. I've been spending way too much time on youtube lately. I just recently realized that there's community and two-way communication in the comments sometimes (and only on some channels). It was much less fun when I thought that the videos were like TV. Finding great channels where the communities are great would be fun. If there hasn't been a thread yet, I'll gladly create one, although I'm not very good at it yet.