I tried watching some of the JCST clips, but the use of foreign language in a musical production was too difficult - I mean, it is the words more than the music in musicals that carry the interest. I do remember a lot from this musical, and of course, the music is quite remarkable, and often returns to my mind, but it hangs on the words so much, I find it too awkward to follow in Swedish.
As for the show itself, it was revolutionary in its day, yet too hard to deny. My favorite parts were the song "We need him crucified, it's all you have to do" and the scene where all the sick and crippled come out of the shadows clawing at Jesus.