Well, it's not actually ours, but we did - in partnership with the most excellent Soeren of Ekstra Bladet - make this rather neat site:
http://nationenblog.dk/
It's been a pretty big project and has got a lot of neat features, we'd love to hear what people reckon to it (criticism welcome!)
There's more info here: http://publisherblog.automattic.com/2008/07/17/nationen-blog-selects-wordpress-mu/
And also here: http://incsub.com/nationenblog/
Cheers, James
Farms, do you guys plan to lease/license any of these cool features? i often recreate the functionality egg, but stuff from guys like you, Andrea, Luna, etc is often more polished.
Thanks guys, you'll definitely be seeing features that can help you get to achieving some components of sites like these over at http://premium.wpmudev.org
We've been ramping up the plugins there of late and have a stack more planned (as well as a little bit of an overhaul!)for the near future.