Instant legend. From the front you can see what a technical marvel this is, but it's highly attractive from the back too.
YouTube video of the watch in motion:
Girard-Perregaux Constant Escapement L.M.
Girard-Perregaux website
Girard-Perregaux Facebook page
Hodinkee's review
A Blog to Watch's review
Revolution's online review
Dream Chrono's review
Watch Anish's review