Rob's Backstage Popcorn | 335 followers on LinkedIn. every bag is special. | Many years ago, Rob Garbowsky - father of former Jonas Brothers guitarist and close friend, Greg Garbowsky - created his signature popcorn recipe: freshly popped kernels seasoned with a sweet, salty, and savory blend unlike anything else out there. In 2011, fate intertwined the lives of Rob's popcorn and the Jonas Brothers forever. After a rained out concert, Nick followed Greg to the Garbowsky house where Rob whipped up a batch of his famous popcorn.