Definitely "I Hate the Bus" from CAROLINE, OR CHANGE (Emmie's "the day come soon, I'll pack up the nothing I own..." is pretty heart-wrenching), and of course the whole "Lot's Wife" scene, beginning with "Sunday Morning" all the way through "Salty Teardrops."
"Sunday"-SUNDAY IN THE PARK WITH GEORGE, I lose it when all the characters bow to George, it gets me every time.
"Move On"-SUNDAY IN THE PARK WITH GEORGE
"Too Many Mornings"-FOLLIES
"Shall We Dance?"-THE KING & I, the second the King holds Anna by the waist, and she just loses it and sighs "yes" and then the magnificent orchestra begins with that beautiful dance music and they start waltzing together...it's a perfect moment.
"Simple"-NINE
"Another Winter in a Summer Town"-GREY GARDENS
"And I Am Telling You I'm Not Going"-DREAMGIRLS
"September Song"-as performed in LOVEMUSIK
"Time Heals Everything"-MACK & MABEL
"I Wish I Could Forget You"-PASSION
"No One Has Ever Loved Me"-PASSION, only when Fosca starts singing, it breaks my heart.
"Whoever You Are"-PROMISES PROMISES, hits too close to home.
"Tell Me On a Sunday"-SONG & DANCE, as performed by Bernadette Peters.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"