Speaking as a kid who grew up without cable in the '90s, PBS is underrated. Obviously, everyone loves Sesame Street, Reading Rainbow and Mister Rogers' Neighborhood. And the Internet (and cosplayers) will never let anyone forget about The Magic School Bus, Where in the World Is Carmen Sandiego?, The Big Comfy Couch or Bill Nye the Science Guy. You can't bring up classic '90s PBS without talking about Wishbone or Lamb Chop's Play-Along, nor should you. Still-thriving Arthur remains underpraised, despite being the longest-running children's animated series in the U.S. (and the second longest-running American animated series behind The Simpsons)... and I have more than once on TWoP snuck in the fact that I am basically committed to watching Marc Brown's aardvark-helmed series through to its bitter end. But, in my humble opinion, the two most overlooked series of all time are The Puzzle Place -- a show that I was up until recently convinced only existed in my head, because to this day I cannot find a fellow fan in the flesh (even its forum hasn't been touched in years) -- and the one I'm writing about today in the spirit of Halloween: Ghostwriter.