I thought that some of the gardeners out there might want to know a bit more about this shrub, which my cursory research identified as Edgeworthia crysantha (apparently the E. papyrifera is a bit smaller, and is less hardy -- a commenter on the horticultural blogpost I'm linking to says that E. papyrifera is more elegant, more daphne-like, but like some daphnes, more susceptible to weather -- and also much slower-growing).
I'm very tempted to investigate whether I could grow one of these in a container on my terrace garden, but I'm checked by the reality that the six inches of water in our fountain basin was frozen solid for the better part of two weeks this winter. Apparently, the shrub can manage some frost, particularly if it's in a sheltered location, but its hardiness is limited -- we do have one such sheltered spot, but the wisteria is there right now, and I won't be shifting that any time soon. (That said, the two specimens I spotted the other day on my run were on a city-planted sidewalk boulevard, in a border that must have experienced similar temps to my terrace this winter, albeit perhaps in a more moderate microclimate?)
For those of you, though, who are looking for an elegant shrub with gorgeous winter fragrance and, apparently, year-round interest (wonderful peeling bark, used for paper-making, and hence one of its common names, Paper-Bush), here are two articles/blogposts I found very useful: this one at Carolyn's Shade Gardens and this How-to-grow article by Matthew Wilson in the (UK) Telegraph.
And do let me know if you've met this shrub in your horti wanderings, or, even better, if you have one growing in your own garden. And if my sighting and subsequent bit of research-sharing should inspire you to grab a shovel and plant one from a local nursery, be sure to tell me, please! I might not have my own big yard to garden any longer, but I'll happily enjoy yours vicariously ;-)