This article discusses two related points: first, that the way in which movies portray lawyers shapes how clients view effective/ineffective lawyer behavior, and second, that the portrayal also helps lawyers to forget appropriate professional behavior.
14 Notre Dame J.L., Ethics & Pub. Pol'y 49 (2000).
Rapoport, Nancy B., "Dressed for Excess: How Hollywood Affects the Professional Behavior of Lawyers" (2000). Scholarly Works. Paper 138.