Top creative and directing talent in the industry, which means it also gets some of the top creative campaigns from agencies. Many of the directors are also film directors, so there's some nice crossover with Hollywood.
Cons
There doesn't seem to be much interest in developing talent in-house, or in training individuals to take on more advanced roles. Part of that is the nature of the industry (heavily freelance and "permalance" based), but it seemed a particular issue here.