In the mid-1980's, Mark and Sally Dietlein helped convert an old factory with a leaky roof into a theater with a round stage.  They opened up to a paid attendance of 25 people.  Over time, sold-out crowds forced the Hale Centre Theatre to knock out walls, add seats, and twice build bigger, newer venues.  Today, they continue to host sold-out performances every year to over a half million theatergoers on one of the world's most technically-advanced stages.  For the Dietleins, finding joy in others' happiness never gets old.