"Phillip Harrison was the production designer, though, I think he's uncredited. He's done most of my films like Blue Thunder. Lots and lots over the years"

John Badham is referring to Phillip Harrison, a production designer who has actually dealt with a number of his movies, including Blue Thunder. Badham is indicating that Harrison has been a long-time collaborator of his, having actually dealt with "lots and lots" of his films throughout the years. However, regardless of his contributions, Harrison is not credited for his work. This might be due to a range of reasons, such as not being credited for legal reasons or simply not wishing to be credited. Regardless, Badham is revealing his gratitude for Harrison's work and the long-lasting cooperation in between the 2.