From the Hip (1987)

Judd Nelson stars in the 1980's dramedy as Robin "Stormy" Weathers, an ambitious young attorney who joins a staid Boston law firm, where he shocks his superiors with his unconventional courtroom tactics. Surprisingly, his exuberant behavior impresses his superiors, and Robin soon finds himself promoted to junior partner. However, when he is assigned to a high-profile rape-murder case, he is forced to reexamine not only his ethics, but also his career decision as he grows to suspect his own client's guilt.