John Ritter, I’ll come knock on your door (or casket, rather) any day.

Yes, my brief, one-sentence eulogy might be a couple — or four — months late. But this is after purchasing “Stay Tuned” on VHS for $6.

Oh, how far $6 can go. It can take you to hell and back, and it does successfully in the separate universe of cable television.

Except this cable television is 100 percent less television and more hell-evision.

Shows like “Dwayne’s Underworld” and the game show “You Can’t Win” undermine the efforts of captured souls that have been sucked into the bizarre universe via faulty satellite dishes.

Roy Knable (Ritter) is one of those captured souls, and a vital asset to the cast of “Stay Tuned.”

Spike (Jeffrey Jones) is the devil, the kingpin of the underworld and head of hell-evision. He goes from door to door, luring the couch potatoes and television junkies into sweet deals with lavish setups. All they have to do is sign a simple, soul-binding release form.

Roy signs the release form and watches some bizarre television like “Three Men and (a puking) Rosemary’s Baby” before the television goes on the fritz. Roy then goes outside to fix the reception.

His wife, Diane, goes with him, and before Roy can shake a remote, the satellite dish sucks them right down to “You Can’t Win,” a television show that pits spouse against spouse for the prize of death or life. Death means the game is over. Life just means a new television show.

Both Knables are whisked in and out of television stations, like parodies of noir gangster films, cartoons, professional wrestling gigs and “Northern Overexposure.”

Before long, the Knable children stumble upon their parents’ disappearance and, moreover, they get inside of the hell-evision.

Darryl Knable breaks into the hell-evision network and saves his father, now dressed as a woman, from the French Revolution.

Roy’s 24 hours of surviving television run out, and he’s beamed back out of the satellite without his wife, who never signed the clause and, thus, never entered into any stipulation. Spike could hold the young woman hostage as he pleased.

This is where things start to get really wacky and manic. In the course of 15 minutes, we are treated to the following parodies: “Star Trek,” “Driving Miss Daisy,” professional hockey, a Salt ‘N’ Pepa music video and, yes, “Three’s Company.”

In what is the best scene in the film, Jan and Chrissy run up to Roy, who is sitting in the piece-for-piece set of “Three’s Company” in the same garb of Jack Tripper.

“Where have you been?” they scream. Roy screams too and quickly changes the channel.

Eventually, Roy’s increasingly annoying and ugly children end up saving the day in a great, albeit predictable manner and all is well in televisionland.

Roy takes a job as a fencing coach, and he and his wife live happily ever after, unlike John Ritter, who died not too long ago of heart failure.

In the brief cartoon, animated by the “Looney Tunes” wizard Chuck Jones, Roy is a mouse that eats quite a few doughnuts.

He says at one point, “My doctor is right! Doughnuts will be the death of me!”

Actually, the doctor was wrong; heart failure will be the death of him. But his life, his legacy and, in particular, “Stay Tuned,” will live long as a reminder for any lonely kid who watches too much television.