Anything by William Finn and Jason Robert Brown. Two of the most gifted and intelligent songwriters since Sondheim. Parade, A New Brain and Falsettoland are some of the most emotionally stirring scores I've ever heard. I don't care if they indulged themselves, but they managed to indulge me as well. Some of their material was based on personal experience (like so many artists), but it doesn't mean it isn't good. The stories are very interesting and emotionally engaging. Gorgeous melodies and brilliant lyrics make the songs immediately memorable (especially in the case of Finn, you'll find yourself memorizing the songs without realizing it). But you don't have to listen to me or MusicMan. Judge for yourself. I suggest the following clips available on Amazon.com:
Heart and Music - A New Brain
Year of the Child - Falsettoland
Four Jews in a Room Butching - March of the Falsettos
The Old Red Hills of Home - Parade
I'm Not Afraid of Anything - Songs For a New World
Still Hurting - The Last 5 Years
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"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian