I like Derek Tant's YouTube videos. He covers a range of piping topics, gives impressions of tobacco blends, reviews pipes, talks about life as a pipe smoker. Funny, high-energy guy.
Bremen, as mentioned earlier is an interesting watch. He has access to blends that are tricky to find in N. America. I don't check him out regularly.
Muttonchop piper, just really like his thoughts on blends and piping. Mellow videos, like his style, but vids can run long.
i like the Smokingpipes video interviews they do with pipe makers, lots of various content & a few diff reviewers via that channel.
The Pipe Nook (Eddie) has a lot of tobacco impressions/pipe talk up.
I like how very different all the above people are to each other.