Centennial, similar to Cascade, is an awesome hop to grow and harvest at home. I concur with the others who have not be wowed with the available commercial harvest.
While I don't grow Centennials, I got some grown from another homebrewer a couple of years ago. They were awesome. I do grow Cascades, and yesterday I brewed an APA with them. The smell was terrific. One theory I have is, when I opened my vacuum-sealed bag of them, there was a thick coating of lupulin gland dust inside the bag that I never see with a pound of commercial hops. Maybe Cascade and Centennial loses a lot of their flavor when harvested and packaged through the loss of the sticky yellow stuff? I don'y know, just a thought.