this is a great find! "Take that, you fiend!" Holy crap, that FW footage was enjoyable. I wish R-Type was given a treatment like that. It's great that you actually had a videotape, even if it was partial, from the show. I sooooooooooooooo wanted to hear the little tyke's review of R-Type. It would have been pure gold. Pure gold.
I can add to this thread: Around 1989-1992, there was a show on WWOR 9 NYC, called "Video Power" or something like that. If you go to the Wikipedia entry for TurboGrafx-16, you'll find the few details I could remember about the show (hopefully it wasn't deleted / edited).
Video Power had a host who briefly narrated footage of NES, Genesis, and occasionally, TG-16 games! Sometimes he would talk about hints / tips for specific games, but usually the footage simply previewed a game.
There was also a cartoon, with a handful of token video game characters (I can't remember if they were licensed characters or clones... I remember a Castlevania / Barbarian sort of fellow, a talking Turnip who was always grumpy, and I forget the others). The cartoon was really, really lame. But I'd loved to see it now because it was totally ridiculous.
Anyway, on one show I remember seeing footage of Blazing Lazers! It was really brief, but it was one of the few TG-16 games to make it onto the show.
Please, please tell me that some crazy bastard out in cyberspace has episodes of Video Power on videotape!