1. The extra level of quality and enjoyment brought to a film by the presence of a particular actor, often making an otherwise lacklustre film worth watching.
2. The ability of an actor to bring this quality to a film.
1. "It should've been just a stupid hollywood pirate movie, but it had deppth."
2. "I'll watch anything with Phillip Seymour Hoffman in it. Hes got deppth."