We went and saw a taping last night, which was a lot of fun. They have guests every week, usually Australian celebrities who we've never heard of, and last night was no exception. But they have a lot of amusing challenges for the contestants, like these we witnessed last night:
Before the show, the host was warming up the audience, and asked if there was anyone here from outside Australia. Aside from a couple from New Zealand, there was only us. So he made a few jokes in our direction, and referred back to us a few times during the night (not while they were filming though).
Just watching the production was interesting to me too. They had to cut a few times to fix sound issues, then try to pick up where they left off in such a way that they can edit it together. There was even some funny audience comments that they wanted to capture on film at the end, so they had to ask the audience member to reenact it on camera. They filmed a good 45 minutes for each show, I think, that gets edited down into 25 minutes or so.