Mine was in 1999 dotcom startup when our eccentric CEO (probably a billionaire or close to it) rebranded our domain and climbed up on a ladder and spray painted it on the brick wall in our SF office. Then when we launched we spent a few million on our launch party with Willie brown and the cirque de sole dancers.

Great place to work, free massages, pool table (before anyone had pool tables). We ran out of money 2 years into it building "v2"