God I love the Internet! And specifically, I love archive.org! A plethora of fantastic things, and the fact that they had THIS was beyond incredible!
What you are looking at here is a 1986 episode of the Osaka TV broadcast of Pasocom Sunday, a show that talks about all manner of subjects related to computers. This particular episode covers Gradius and other topics.
Of course, an understanding of Japanese will help you get the most out of it, but even if you don't have that, any fan of old Japanese TV will get there fill... commercials, a wacky intro, old video game footage, etc!
