I have and it is the single biggest mass of WTFery I have ever seen in my life. We have whole scenes in nothing but the Wookie language without any kind of subtitles, Harvey Korman as a female four armed chef, and Bea Arthur singing to the patrons of the Mos Eisley cantina. I think I watched whole thing either shaking my head, or with my jaw hanging open in disbelief.
I was 11 when it came out but i don't think i ever saw it. If I did I sure repressed the memory of it. it sounds awful.