Catherine Zeta Jones in "A Little Night Music." (Photo by Joan Marcus) I'm not sure any Stephen Sondheim show is really underrated anymore"there are passionate partisans for every one, from Anyone Can Whistle to Road Show"but I would still nominate A Little Night Music for the category of under-appreciated (despite containing his one breakout hit song). I'd say this under-estimation might be due in part to the f…
