Joe Pantoliano built a career on characters who are about to betray someone, in The Fugitive, Memento and The Matrix, where Cypher’s diner scene about the steak is the film’s clearest statement of its own premise.
Risky Business gave him Guido the killer pimp, and Bad Boys gave him a police captain permanently at the end of his patience.
The Sopranos won him an Emmy for Ralph Cifaretto, a character of such unpleasantness that his exit is a relief.
He has written two memoirs and campaigns publicly about depression, having been diagnosed with clinical depression himself.