Pippin, I've heard similar wonderful things about his conducting. I had the joy of watching an archive at the museum of the PBS special "Bernstein conducts West Side Story." Between playing along and watching him conduct and he gave advice to the clarinet on something(me: eee I kinda just got advice from Bernstein), he just put so much feeling into it.
He also was a great humanitarian, I've read biographies on him. Without question, if I can sit down w/, have dinner w/ or talk to any person dead or alive, my answer would be him.
"If there was a Mount Rushmore for Broadway scores, "West Side Story" would be front and center. It snaps, it crackles it pops! It surges with a roar, its energy and sheer life undiminished by the years" - NYPost reviewer Elisabeth Vincentelli