I found myself liking the show trope of the ghosts talking before they actually materialize and show themselves with this episode, because Erik the Red is played by the unmistakable Jim Backus, who was Thurston Howell III on Gilligan’s Island and the immortal voice of Mister Magoo. So when he started yelling, I said “I know who thaaaat is…” Backus did quite a lot of kid-friendly work in the 1970s in addition to prime-time roles. His time on Gilligan made him high-demand from just about every producer in town. You never asked “What’s Jim Backus doing in a cheap show like this,” because he was in every show, regardless of budget or audience.
Daniel adored this episode, which has series-best hallway gags (all five principals end up colliding in the middle) and filing cabinet gags. The trick to the filing cabinet this time is that it has to be shoved from behind to open, and it’s bolted to an exterior wall. Fortunately, Tracy’s grandfather was known for climbing the Empire State Building. This leads to a completely unexpected gag when Tracy makes a second trip outside the building to walk around. I wondered what he was up to, and had a very good laugh when the gag pays off.
Joining Backus in this trip back from the afterlife is an actress named Lisa Todd as Brunhilda. Of course that’s her name; there aren’t any other Viking names for women on television. She doesn’t seem to have had a very long career, but she was a “Hee Haw Honey” for most of four seasons in the seventies.
Fire Breathing Dimetrodon Time 
“Fortunately, Tracy’s grandfather was known for climbing the Empire State Building.”
And there’s your set up for showing Daniel King Kong. I remember we got a 35mm print of that at UGA. It looked gorgeous!