Hexed, I thought the same thing as you to start with when I looked at that site.
I think the Farewell concert is probably the most atmospheric, the crowd is huge and goes off, it's in front of an Australian icon (the Sydney Opera House), the playing is well up to standard (I thought it was great) it's filmed well, and the sound is excellent. I haven't seen any other filmed concert by Crowded House that looks as good (I haven't seen them all of course, but I have seen quite a few). I'm sure others sound better, but I haven't seen one that looks as good.
Multitracks also exist for it so it can be mixed to 5.1 I don't think many other CH cocnerts would be in the same postition, filmed professionally and with multitracks for audio