This special was so unbelievably, unwatchably terrible that it aired only that one time. George Lucas has never allowed it to be re-aired or released on DVD or in any other way in the 30 years since then. (I remember watching it on TV at the time and thinking, even as a young kid, that it was terrible. I turned it off well before the end.) That alone has made it a much sought after "cult classic," however, out of all proportion to its actual quality or entertainment value. But the gem at its heart was a 9 minute animated short featuring the first ever appearance of Bobba Fett, which is actually pretty good. I've embedded that below.
How can something be both unbelievably boring and simultaneously cringe-inducing? Well, you can see for yourself if you watch the second, 5 minute clip from the special that I've embedded below. Someone has cleverly abridged the live action portions of the 2 hour show down to 5 minutes of "highlights," including a Bea Arthur song and dance number in the creature cantina, Art Carney as Chewbacca's home town junk peddler, and Carrie Fisher closing out the show by singing a musical ode to Life Day. If you watch this, it will give you a great idea what the whole show was really like, and why George Lucas has buried it.