In order:
1) The final few minutes of August: Osage County
2) Mary Testa and Jackie Hoffman's "Evil Woman" in Xanadu
3) Ankia Noni Rose's monologues from Cat
4) "96,000" and the title number from In the Heights
5) "If Momma Was Married" from Gypsy...I'm naming it because it was always a skippable song on recordings and such but with Ann Leigh Larkin and Laura Benanti belting it out, it became a showstopper.
6) The majority of the last half of the first act of Is He Dead?
7) Patti LuPone's "Some People"

Andrea Martin's introduction to "Puttin' on the Ritz" from Young Frankenstein
9) "I Stayed" and the concluding scenes of A Catered Affair
10) A tie between the curtain call of Boeing-Boeing and "A Little Upset"'s dance break in Cry-Baby