Omar Sider of Arlington, Va. hired a flash mob to surprise his girlfriend, Star Morrad with his proposal for marriage in Georgetown Waterfront Park.

The market and Palette Creative have shared video of the proposal at the Jack Poole Plaza this week, and it includes a singing flash mob made up ... whose surprise is priceless in the video ...

In honor of National Proposal Day, we've compiled a list ... Shoppers at the Gateway Mall in Salt Lake City were treated to a surprise flash mob on Saturday. A video of flash mob dancer Johnny ...