One more thing about the episode, which concerns a joke involving the junkyard:
Betamax: Betamax was one of the first home video systems introduced to the market. Compared to VHS machines, Betamax was the better of the two when compared to video and sound quality and rewind and fast forward capabilities. However, two things led to Betamax's demise. The first cause was that with the Beta tapes being smaller than VHS tapes, less amount of video can be put on a Beta tape (in the beginning, Beta had only one hour of tape time compared to VHS's two hours of time). Second, the company behind Betamax, Sony, failed to promote the system effectively during the VCR wars, thus giving VHS the major advantage.
Laserdiscs: Introduced in the 1980's, laserdisc was the first digital home video system. Not only did it have better video quality than the analog VHS and Beta, but it also had other features like chapter stops (meaning less need to rewind and fast forward) and the ability to contain extras like special features and additional audio tracks. Unfortunately, laserdisc had some problems of its own, which led to it not being able to beat VHS in the video wars: the titles were expensive (about $100 a disc); the discs were as big as vinyl records; and the discs can only hold an hour of video footage per side (which meant flipping over the discs if you want to see a two-hour movie).
Reserved for DVD: Currently, DVD, which is very similar to laserdisc, isn't going to wind up in a junkyard at any time. In fact, it has surpassed VHS in the home video market. Like laserdisc, DVDs contain movies on a disc. However, there's many improvements from laserdiscs that was used for DVD: the discs are smaller (the size of a CD); they are much cheaper (while still more expensive than VHS, the cost of a DVD is usually around the $25-30 price area); and there's way more room to store video on a DVD than on a laserdisc. Add the DVD-ROM's that are sold on most computers and the fact that the Playstation 2 and Xbox can read DVD's, and you realize that it will be a while before the place in the junkyard reserved for DVD is filled up.
Joe Klemm