The simmering decadence of fin-de-siécle Vienna may have inspired Arthur Schnitzler's infamous work about a daisychain of sexual liaisons, yet more than 80 years after its first scandalous staging, La Ronde continues to inspire updates ranging from the wittily insolent to the puzzlingly futile. David Hare's The Blue Room infamously launched Nicole Kidman's British stage career and the critical term "theatrical Viagra", New Yorker Michael John LaChiusa introduced gay scenes and songs to his urbane, decade-hopping Hello Again, and only this week, Carlo Gebler's Ten Rounds added Northern Ireland politics to the formula of lingering sexual dynamite.