There have been a couple times when I saw Standing Ovations during a show.
Smokey Joe's Cafe-- when BJ Crosby sang the reprise (slow version) of Fools Fall in Love... the place was packed as they had just been nominated for the tonys and people where treating the song like another "And I am Telling You"
Jekyll and Hyde -- opening night in sacramento. Technically it was at the end of Act One. Linda Eder sang Someone Like You and audience went ape crazy.
CHESS -- also in Sacramento when Judy McLane and Marcia Mitzman (reprising her role of Svetlana) sang I Know Him So Well when it first played Music Circus.
"Whenever I get gloomy with the state of the world, I think about the arrivals gate at Heathrow Airport. General opinion's starting to make out that we live in a world of hatred and greed, but I don't see that. It seems to me that love is everywhere. Often it's not particularly dignified or newsworthy, but it's always there - fathers and sons, mothers and daughters, husbands and wives, boyfriends, girlfriends, old friends. When the planes hit the Twin Towers, as far as I know none of the phone calls from the people on board were messages of hate or revenge - they were all messages of love. If you look for it, I've got a sneaky feeling you'll find that love actually is all around."