Coffee Chain founded by Alfred Peet in Berkeley in 1966. Peet's specializes in a "deep roast" style that is much darker than most other roasters. This style produces a fuller flavor, but makes the coffee in their darkest roasts, taste somewhat burnt. Some people find Peet's too strong, but it has a large following of very loyal fans. Alfred Peet sold the chain to a man who would later co-found Starbuck's.
http://www.peets.com/