Denny’s (DENN) has Jensen Huang. Huang, a former Denny’s dishwasher and server, later founded Nvidia (NVDA), the company ...

Same-store sales are down at the coffee chain's U.S. stores. But a successful turnaround isn't off the menu yet.

The fast-growing coffee chain is better loved by consumers than you-know-what in the business, according to a recent survey.