The group Broadway Cares/Equity Fights AIDS raises a ton o' dough each year to help folks in and around the theatrical community, mainly though not exclusively those afflicted with HIV/AIDS. They also support other, non-theatrical efforts in that direction. Among the ways they raise funds is to stage some wonderful shows and this clip is from the 2007 Gypsy of the Year Awards, which I wish I'd seen in person.
2007 marked the 50th anniversary of the Broadway milestone, West Side Story. In the number you're about to see (assuming you're smart enough to click below), several moments from that show were re-created on stage with then-current Broadway dancers and they were joined in the effort with members of the original cast. I wasn't there but even out here, I could hear the audience back there applauding…