Nothing can beat Les Mis for me. When I saw the show last Novemeber for the first time, I already knew the music by heart, but I nearly had a spaz attack from shear excitement when the conductor swung his arms for the first time and I heard the opening notes.
I love Phantom too. Never seen the show, but I get chills all over when the chandelier flies up and you hear DUN DUN DUN DUN DUN!!! in the movie.
Wicked is another one.
Coimhéad fearg fhear na foighde.