In that light I'm nominating @obivankenobi. Really cool dude. Recently he has a bunch of Unix 101 How-To posts queued up that come out every Tuesday evening (20:00 UTC Time). If you like these geeky hacks don't be afraid to leave a comment.
I just had to bring up this great, modest, humble guy who would never dare to self-promote himself by speaking about himself in 3-rd person.
Have a great day!