The Company Theatre offers a Hairspray flash mob in MA.

Union members in Madison, WI, deliver a rousing "Do You Hear the People Sing" at the state Capitol.

The Berkshire Theatre Group Acting Apprentices offer an A Chorus Line flash mob.

A Broadway Godspell flash mob in Times Square.

A Cats flash mob in Colorado.

Les Misérables Flash Mob with Laura Wright 2013 "Do You Hear The People Sing"

A Disney musical marriage proposal flash mob.

A wedding gets theatrical with a Les Misérables flash mob.

A Legally Blonde flash mob in Liverpool.

A Footloose flash mob in Utah.

A group of young theatre fans take over Walmart with this Les Misérables flash mob.

Does a one-woman Evita flash mob in the West End count?

An Anything Goes flashmob.

A Hair flash mob in Las Vegas.

Shakespeare flash mob surprises diners with pop-up performance.

The national tour of In The Heights celebrates its arrival in Los Angeles.

Playbill.com's video of a West Side Story flash mob that invades the streets of NYC in honor of the 50th anniversary of the Academy Award-winning film.

The Paper Mill Playhouse production of Hairspray offers a flash mob.

The cast of Memphis, along with some Broadway friends, do a Central Park flash mob.

The tour of Rock of Ages flash mobs Quincy Market in Boston, MA.