Not quite 'modern' by modern standards I guess, but I do certainly have a superlight hardtail: viewtopic.php?f=21&t=249295&start=50 (details and history in the build thread)
It's not currently for sale, though I haven't actually ridden it for two years now (I seem to only be on the road or the turbo nowadays) so if it's the sort of thing you might be interested in we can always talk...
