I pointed them at Hugin.
It took Phil quite a bit of work to produce these, but now there's a really easy way for anyone to produce stitched pictures. Microsoft research has produced a free tool that allows you to simply drag and drop a series of pictures into the composite editor and let it figure out all the pinning, which pictures are in or out of the composite, and all that jazz. Best of all, it runs even on my 3 year old Mac Mini (though you want at least 2GB of RAM). It does suck up all the CPU but the machine is still pretty responsive. I played with it for about 2 hours and here are the results:
If Microsoft keeps producing software like this, everyone else in the industry should get very very scared. What annoys me is that neither Picasa nor Lightroom has this integrated into their workflow, and it should be. Click-select-stitch! In any case, this is a great tool, and is yet another reason why my Mac Mini runs XP.