Seriously good food. A good friend who gets out a lot more than I do and is a serious foodie (I totally trust his opinions on this) told me the other day that Vincenti was one of his "top two" in L.A. (Campanile was the other). I've been a few times, but not lately and have no specific food recommendations.
Also a good wine list. Great space. And Maureen (it's her place) is a kick.
Only downsides are prices (this quality does not come cheap or even moderate) and the fact that Vincenti does not stay open very late.
Hope this helps.